The invention discloses a terminal assembly and a wiring handle thereof. The wiring handle comprises a pressing rod body and a handle, wherein one side of the pressing rod body is provided with a pressing convex arm, and the other side of the pressing rod body is provided with a blocking part in an extending manner; the handle and the pressing rod body are connected with each other by using a pin-jointed structure, one side of the handle is provided with a clamping convex arm in the extending manner, the other side of the handle is provided with an elastic arm in the extending manner, the clamping convex arm and the pressing convex arm are arranged oppositely, and the elastic arm abuts against the blocking part selectively; therefore, the wiring handle can be tightly buckled onto the terminal but without falling off so that the wiring handle has the effect of facilitating to buckle the terminal.