The invention relates to the technical field of power generation devices, and discloses a vehicle-mounted turbo-type fluid generator unit. The vehicle-mounted turbo-type fluid generator unit comprises a main cylinder and a cylinder cover; the two sides of the lower end of the main cylinder are each provided with an air cylinder, a piston cylinder and a medium cylinder are arranged in the main cylinder, a piston is arranged in the piston cylinder, the two ends of the piston are each provided with a piston rod, the two ends of the medium cylinder are each provided with a liquid inlet one-way valve, a liquid outlet channel is formed in the middle of the medium cylinder, the two sides of the liquid outlet channel are each provided with a liquid outlet one-way valve, the outer end of the liquid outlet channel is connected with a liquid collecting cylinder, a liquid outlet pipe is arranged on the side face of the liquid collecting cylinder, a flow guide cover is arranged at the outer end of the liquid outlet pipe, a turbine is arranged in the flow guide cover, the inner wall of the main cylinder is provided with a power generator connected with the turbine, the two ends of the bottom of the main cylinder are provided with support legs, a support plate is arranged between the lower ends of the support legs, and a plurality of heat dissipation fins are arranged on the bottom face of the main cylinder. A medium is driven by the air cylinders to rush the turbine, then the power generator is driven to generate power, the overall stability is good, and the power generation efficiency is high.