A ball arm switching shower has a fixed unit and a switching mechanism. The fixed unit is provided with multiple outlet functions, a assembling slot and a water inlet passage, each outlet function is provided with a water division hole. The switching mechanism comprises a connecting part, a handle, a switching plate, a transmission shaft and a sealing piece. The connecting part can be mounted in the assembling slot in a sliding and swinging manner. The handle is fixedly connected to the connecting part. The transmission shaft can fixedly connect to the connecting part and the switching plate, so that the switching plate can be driven to swing and slide through the movement of the handle.