The invention discloses a door frame type multi-functional support trolley for a tunnel. The door frame type multi-functional support trolley for the tunnel comprises a door frame and a working platform. The top end of the door frame is provided with a sliding groove track and an arch centering mounting device. The arch centering mounting device comprises a traveling bogie and a lifting device, wherein the traveling bogie is capable of moving backward and forward on the sliding groove track. The lower side of the lifting deviceis fixed to the traveling bogie. The left side and the right side of the lifting device are provided with left-right moving mechanisms and left-right moving tracks for the left-right moving mechanisms to move correspondingly. The left-right moving mechanisms are provided with transportation supports. The sliding groove track comprises a fixed sliding groove track and a movable sliding groove track with the same gauge. The fixed sliding groove track is fixed to the rear of the top end of the door frame and the tail end of the fixed sliding groove track is beyond the tail end of the door frame. The movable sliding groove track is fixed to a sliding platform in the middle of the front of the top end of the door frame. The rear end of the sliding platform is hinged to one end of a sliding cylinder, and the other end of the sliding cylinder is hinged to the door frame. According to the door frame type multi-functional support trolley for the tunnel, the arch centering mounting requirements of a micro-step excavation and support construction method of very weak surrounding rock can be met, and the working procedure time occupied by the arch centering mounting is shortened.