The invention provides a connecting member and a micro-channel heat exchanger. The connecting member comprises a first side plate, a second side plate and an arc-shaped plate connected between the two plates, wherein a plurality of communicating channels (1) which are in parallel with one another and are spaced apart are provided in the connecting member, each of the communicating channels (1) extends from the first side plate to the second side plate. The invention solves the problem that the outer walls of the heat exchange tubes become thin due to bending of the heat exchanger.