diff --git a/app/Models/CategoryModal.php b/app/Models/CategoryModal.php
index e4ec51c1..38ac9387 100644
--- a/app/Models/CategoryModal.php
+++ b/app/Models/CategoryModal.php
@@ -3,6 +3,7 @@
 namespace App\Models;
 
 use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\HasMany;
 
 /**
  * 分类表
@@ -13,4 +14,13 @@ class CategoryModal extends Model
     protected $table = 'categories';
 
     protected $guarded  = [];
+
+    /**
+     * 项目
+     * @return HasMany
+     */
+    public function projects(): HasMany
+    {
+        return $this->hasMany(ProjectModal::class, 'category_id', 'id');
+    }
 }
diff --git a/app/Models/FrameworkModal.php b/app/Models/FrameworkModal.php
index 3a54a396..9fedc885 100644
--- a/app/Models/FrameworkModal.php
+++ b/app/Models/FrameworkModal.php
@@ -3,6 +3,7 @@
 namespace App\Models;
 
 use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsToMany;
 
 /**
  * 框架表
@@ -13,4 +14,13 @@ class FrameworkModal extends Model
     protected $table = 'frameworks';
 
     protected $guarded  = [];
+
+    /**
+     * 项目关联
+     * @return BelongsToMany
+     */
+    public function projects()
+    {
+        return $this->belongsToMany(ProjectModal::class, 'project_frameworks_relations', 'framework_id', 'project_id');
+    }
 }
diff --git a/app/Models/LabelModal.php b/app/Models/LabelModal.php
index 2cba0f74..23886959 100644
--- a/app/Models/LabelModal.php
+++ b/app/Models/LabelModal.php
@@ -3,6 +3,8 @@
 namespace App\Models;
 
 use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsToMany;
+use Illuminate\Database\Eloquent\Relations\HasMany;
 
 /**
  * 标签表
@@ -13,4 +15,13 @@ class LabelModal extends Model
     protected $table = 'labels';
 
     protected $guarded  = [];
+
+    /**
+     * 项目关联
+     * @return BelongsToMany
+     */
+    public function projects(): BelongsToMany
+    {
+        return $this->belongsToMany(ProjectModal::class, 'project_labels_relations', 'label_id', 'project_id');
+    }
 }
diff --git a/app/Models/OrderModal.php b/app/Models/OrderModal.php
index ee351bdc..4b3c62b9 100644
--- a/app/Models/OrderModal.php
+++ b/app/Models/OrderModal.php
@@ -3,6 +3,8 @@
 namespace App\Models;
 
 use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Database\Eloquent\Relations\HasOne;
 
 /**
  * 订单表
@@ -13,4 +15,22 @@ class OrderModal extends Model
     protected $table = 'orders';
 
     protected $guarded  = [];
+
+    /**
+     * 用户关联
+     * @return HasOne
+     */
+    public function user()
+    {
+        return $this->hasOne(UserModal::class, 'id', 'user_id');
+    }
+
+    /**
+     * 订单详情
+     * @return HasMany
+     */
+    public function items(): HasMany
+    {
+        return $this->hasMany(OrderItemModal::class, 'order_id', 'id');
+    }
 }
diff --git a/app/Models/ProjectFrameworksRelationModal.php b/app/Models/ProjectFrameworksRelationModal.php
index 37e985df..3151d80c 100644
--- a/app/Models/ProjectFrameworksRelationModal.php
+++ b/app/Models/ProjectFrameworksRelationModal.php
@@ -3,6 +3,7 @@
 namespace App\Models;
 
 use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsToMany;
 
 /**
  * 项目框架关联表
diff --git a/app/Models/ProjectLabelRelationModal.php b/app/Models/ProjectLabelRelationModal.php
index 591f53b5..0f849a7e 100644
--- a/app/Models/ProjectLabelRelationModal.php
+++ b/app/Models/ProjectLabelRelationModal.php
@@ -3,6 +3,7 @@
 namespace App\Models;
 
 use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\HasOne;
 
 /**
  * 项目标签关联表
@@ -13,4 +14,22 @@ class ProjectLabelRelationModal extends Model
     protected $table = 'project_label_relations';
 
     protected $guarded  = [];
+
+    /**
+     * 项目
+     * @return HasOne
+     */
+    public function project(): HasOne
+    {
+        return $this->hasOne(ProjectModal::class, 'id', 'project_id');
+    }
+
+    /**
+     * 标签
+     * @return HasOne
+     */
+    public function label(): HasOne
+    {
+        return $this->hasOne(LabelModal::class, 'id', 'label_id');
+    }
 }
diff --git a/app/Models/ProjectModal.php b/app/Models/ProjectModal.php
index 08782577..ff8296ed 100644
--- a/app/Models/ProjectModal.php
+++ b/app/Models/ProjectModal.php
@@ -3,6 +3,9 @@
 namespace App\Models;
 
 use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsToMany;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Database\Eloquent\Relations\HasOne;
 
 /**
  * 项目表
@@ -14,4 +17,75 @@ class ProjectModal extends Model
 
     protected $guarded  = [];
 
+    /**
+     * 用户关联
+     * @return HasOne
+     */
+    public function user(): HasOne
+    {
+        return $this->hasOne(UserModal::class, 'id', 'user_id');
+    }
+
+    /**
+     * 作者关联
+     * @return HasOne
+     */
+    public function author(): HasOne
+    {
+        return $this->hasOne(UserModal::class, 'id', 'author_id');
+    }
+
+    /**
+     * 标签关联
+     * @return BelongsToMany
+     */
+    public function labels(): BelongsToMany
+    {
+        return $this->belongsToMany(LabelModal::class, 'project_labels_relations', 'project_id', 'label_id');
+    }
+
+    /**
+     * 截图关联
+     * @return HasMany
+     */
+    public function screenshots(): HasMany
+    {
+        return $this->hasMany(ScreenshotModal::class, 'project_id', 'id');
+    }
+
+    /**
+     * 框架关联
+     * @return BelongsToMany
+     */
+    public function frameworks(): BelongsToMany
+    {
+        return $this->belongsToMany(FrameworkModal::class, 'project_frameworks_relations', 'project_id', 'framework_id');
+    }
+
+    /**
+     * 技术栈关联
+     * @return BelongsToMany
+     */
+    public function technologyStacks(): BelongsToMany
+    {
+        return $this->belongsToMany(TechnologyStackModal::class, 'project_technology_stacks_relations', 'project_id', 'technology_stack_id');
+    }
+
+    /**
+     * 功能关联
+     * @return HasMany
+     */
+    public function features(): HasMany
+    {
+        return $this->hasMany(FeatureModal::class, 'project_id', 'id');
+    }
+
+    /**
+     * 分类关联
+     * @return HasOne
+     */
+    public function category(): HasOne
+    {
+        return $this->hasOne(CategoryModal::class, 'id', 'category_id');
+    }
 }
diff --git a/app/Models/TechnologyStackModal.php b/app/Models/TechnologyStackModal.php
index 6eb9297c..8bcc4218 100644
--- a/app/Models/TechnologyStackModal.php
+++ b/app/Models/TechnologyStackModal.php
@@ -3,6 +3,7 @@
 namespace App\Models;
 
 use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsToMany;
 
 /**
  * 技术栈表
@@ -13,4 +14,13 @@ class TechnologyStackModal extends Model
     protected $table = 'technology_stacks';
 
     protected $guarded  = [];
+
+    /**
+     * 项目关联
+     * @return BelongsToMany
+     */
+    public function projects(): BelongsToMany
+    {
+        return $this->belongsToMany(ProjectModal::class, 'project_technology_stack_relations', 'technology_stack_id', 'project_id');
+    }
 }
diff --git a/app/Models/UserModal.php b/app/Models/UserModal.php
index e459b83f..2959bb9c 100644
--- a/app/Models/UserModal.php
+++ b/app/Models/UserModal.php
@@ -3,6 +3,8 @@
 namespace App\Models;
 
 use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Database\Eloquent\Relations\HasOne;
 
 /**
  * 用户表
@@ -13,4 +15,31 @@ class UserModal extends Model
     protected $table = 'users';
 
     protected $guarded  = [];
+
+    /**
+     * 项目关联 - 上传视角
+     * @return HasMany
+     */
+    public function projects(): HasMany
+    {
+        return $this->hasMany(ProjectModal::class, 'user_id', 'id');
+    }
+
+    /**
+     * 项目关联 - 作者视角
+     * @return HasMany
+     */
+    public function projectsAuthor(): HasMany
+    {
+        return $this->hasMany(ProjectModal::class, 'author_id', 'id');
+    }
+
+    /**
+     * 角色关联
+     * @return HasOne
+     */
+    public function roles(): HasOne
+    {
+        return $this->hasOne(RoleModal::class, 'id', 'role_id');
+    }
 }