Fast connector with holding member

Disclosed is a fast connector. The connector comprises a housing, a clamp element, a bias structure and a holding structure. The housing comprises a longitudinal part, a transverse part and a longitudinal through hole. The transverse part is provided with a top side, a bottom side and an opening that is transverse to the longitudinal hole and extends from the top side to the bottom side. The clamp element comprises a top part and base part. The base part comprises a first side, a second side, a top side and a bottom side. The base part is provided with an opening. The opening is extended, between the top side and the bottom side of the base part, from the first side to the second side. The top part is outward extended from the near part of the top side of the base part to the first side. The bias structure is disposed on either the housing or the clamp element, capable of operating the clamp element to press the longitudinal hole in the housing and the opening of the clamp element in a bias manner. The holding structure is disposed on either the housing or the clamp element, and operated to substantially increase joint break connection resistance in a pressurization state instead of joint break connection resistance in a non-pressurization state. The holding structure can prevent the joint from being disconnected accidentally in the pressurization state.