The invention discloses a comprehensive detecting device for an underground pipeline path. The comprehensive detecting device comprises a transmitter, a receiver and a photovoltaic mobile power source, wherein the transmitter sends a signal to the pipeline to be detected, the receiver receives the signal traveling along the pipeline, and the photovoltaic mobile power source supplies power for thetransmitter and the receiver; the photovoltaic mobile power source comprises a main body box, wherein the surface of the main body box is fixedly connected with a heat insulation box, the surface of the heat insulation box is fixedly connected with a heat dissipation box, the upper surface of the heat dissipation box is fixedly connected with a reflective heat insulation film, the surface of the heat dissipation box is provided with a temperature insulation device which comprises a support block, the inner wall of the main body box is provided with a heat dissipation device, and the heat dissipation device comprises a heat collecting plate. The comprehensive detecting device has the advantages of providing a photovoltaic mobile power source for detecting the transmitter and the receiver outdoors, effectively utilizing light energy and being convenient to carry.