The invention provides a fuel-electricity dual-purpose bulldozer, which comprises a chassis, a power system, a transmission case, a running system, a hydraulic power station, a hydraulic system, an operating system, a control circuit, a cable drum, an oil motor for a drum, a driving oil motor, a driving transmission case of the power system and a hydraulic pump station. The output shaft of the transmission case drives the running system, the hydraulic pump station provides pressure oil for the hydraulic system which drives the operating system; the power system comprises a fuel engine and an AC motor; the hydraulic pump station comprises a hydraulic pump station driven by the fuel engine and an electric hydraulic pump station driven by the AC motor, the two hydraulic pump stations are connected with the hydraulic system through a two-position three-way valve; the electric and hydraulic pump station provides pressure oil for the drum oil motor and the driving oil motor; the fuel enginedrives the input shaft of the transmission case; the driving oil motor drives the intermediate shaft of the transmission case through an engaging and disengaging device; a cable drum is used for drawing or releasing the cable and the drum oil motor drives the cable drum to draw or release the cable; a control circuit controls the bulldozer when the bulldozer is driven by the AC motor. The invention can effectively save fuel, reduce the pollution to the environment by the exhaust gas of the fuel and can considerably reduce the operation cost.