Step1 :

phone & pc connect the same wifi.

Step2 :

phone use usb cable to connect pc.

Step 3 :

$ adb devicesList of devices attached0123456789ABCDEF device

Step 4 :

$ adb usbrestarting in USB mode

Step 5 :

$ adb tcpip 5555restarting in TCP mode port: 5555

Step 6 :

$ adb shell ifconfigwlan0 Link encap:UNSPEC inet addr:192.168.43.74 ............

Step 7 :

$ adb connect 192.168.43.74:5555connected to 192.168.43.74:5555

Step 8 :

$ adb devicesList of devices attached0123456789ABCDEF device192.168.43.74:5555 device

Step 9 :

disconnect usb cable.

Step 10 :

$ adb devicesList of devices attached192.168.43.74:5555 device

you can use adb shell to operate phone over wifi.

If you can‘t connect the phone, please reboot the phone then repeat above steps.

Reference:

http://vjson.com/wordpress/adb%E9%80%9A%E8%BF%87wifi%E8%BF%9E%E6%8E%A5android%E8%AE%BE%E5%A4%87.html