Flow rate self-adaptive fish-simulating underwater thruster

The invention belongs to the field of bio-simulation machine design and specifically relates to a flow rate self-adaptive fish-simulating underwater thruster. The flow rate self-adaptive fish-simulating underwater thruster comprises a shell, a battery pack, a control module, a tail part and a driving device, wherein the driving device comprises a motor, a motor mounting plate, a base, a supporting block, a tail connecting rod, a guide rail, a rail sliding block, a driving wheel, a driven wheel and a driving rod. The flow rate self-adaptive fish-simulating underwater thruster is characterized by further comprising a flow rate sensor, a steering engine, a screw rod, a poke rod, a shift fork and a transmission wheel. In the working process, the flow rate sensor is used for detecting the water flow rate surrounding the fish-simulating underwater thruster, the flow rate data is sent to the control module through a wire, the control module is used for controlling the steering engine to rotate according to the flow