Marine propulsion energy-saving device

The invention discloses a marine propulsion energy-saving device, and particularly relates to the field of propellers, the marine propulsion energy-saving device comprises a propeller, an adjusting mechanism for adjusting the position of the propeller is arranged at the top end of the propeller, and a mounting mechanism is arranged at the top end of the adjusting mechanism; the adjusting mechanism comprises an adjusting frame and an inner frame arranged in the adjusting frame, the bottom end of the inner frame is integrally connected with the outer surface of the propeller, a mounting groove is formed in the adjusting frame, an air cylinder is fixedly mounted in the mounting groove, and an output shaft of the air cylinder is fixedly connected with the inner wall of the mounting frame. The position of the propeller is adjusted through the adjusting mechanism and the lifting mechanism, the lifting mechanism controls vertical adjustment of the propeller, the adjusting mechanism can drive the propeller to rotate