The invention discloses a power source vehicle and a power supply system. The power source vehicle comprises an energy storage device and a control cabinet, wherein the energy storage device and the control cabinet are arranged in a vehicle box, the energy storage device comprises at least one battery pack, each battery pack comprises a plurality of battery branches and a battery frame, each battery branch is formed by connecting a plurality of batteries in series, any two adjacent battery branches are connected in parallel through a first soft starting circuit, the battery frames correspond to the batteries in a one-to-one mode, and are used for mounting the batteries, therefore, abrasion between the batteries in power source vehicle running is avoided, and the service life of the batteries is prolonged. In addition, a control system in the control cabinet controls an inversion device to convert direct-current voltages output by the energy storage device into alternating-current voltages so as to be used by an external-connection device, diesel oil does not need to be purchased, cost is reduced, noise is lowered, and the environmental protection property is enhanced.