Engineering power supply vehicle

An engineering power supply vehicle is used for supplying power to external electric equipment, particularly engineering machines, agricultural machines and the like for field work. The engineering power supply vehicle comprises a movable vehicle body, a signal receiver and transmitter and a controller. The vehicle body is provided with a power generation device, a power conversion device and a cable winding and unwinding device. The power conversion device adjusts power generated by the power generation device, the power is transmitted to the external electric equipment through the cable winding and unwinding device, and the cable winding and unwinding device winds and unwinds cables through a coiling block. The signal receiver and transmitter receives instructions of the external electric equipment, and the controller controls the power conversion device according to the instruction to outputs power required by the external electric equipment. The engineering power supply vehicle can automatically adjust the length of cables so that the external electric equipment can work in a certain stroke range, work rotation capacity is good, environment adaptability is high, and the advantages are more obvious in work zones where oil gas lacks or limitation on noise pollution and waste gas exhaust pollution is strict.