I want to go to Friday Muslim Street Market in Shanghai. so which station i alight?

The market is located near Changde road, and the nearest subway station is Changshou Road on Line 7 and Line 13. Take the Exit 2 and walk north for few mins, you will reach the market.

Yes, you are right about that, the market is open on Friday only. I went there once. By 10:00-11:00am, all vendors would set up their stands/carts.