diff --git a/projects/services.py b/projects/services.py
index 50b9a64..e993e06 100644
--- a/projects/services.py
+++ b/projects/services.py
@@ -1,4 +1,8 @@
-from .models import Project
+from .models import *
+from .serializers import *
+
+from users.models import *
+from common.models.choiceModels import InvitationStatus
 
 
 ACTION_FIELD_MAP = {
@@ -38,3 +42,16 @@ class ProjectStateChangeService:
         now_count = current_count+1 if add else max(current_count-1, 0)
         setattr(project, field_name, now_count)
         project.save(update_fields=[field_name])
+
+
+class ProjectInvitationService:
+    @staticmethod
+    def create_project_invitation(project: Project, from_user: User, to_user: User, notification: Notification):
+        return ProjectInvitation.objects.create(
+            project=project, 
+            from_user=from_user, 
+            to_user=to_user, 
+            status= InvitationStatus.PENDING,
+            notification=notification
+            )
+        
\ No newline at end of file