The invention discloses an 
energy feedback shock absorber which comprises a dust cover, a cylinder 
barrel, a combined 
piston, a 
piston rod, a single lug ring, an air bag, an air bag protection cover, an end cover, an energy accumulator, a first high-pressure oil 
pipe, a second high-pressure oil 
pipe and a high-pressure air 
pipe. By the aid of a combined 
piston structure, a first curved throttling oil channel and a second curved throttling oil channel are formed, oil in an upper cavity of the cylinder 
barrel passes the first curved throttling oil channel, a first 
piston rod oil channel is connected with a hydraulic 
system through the first high-pressure oil pipe, oil in a lower cavity of the cylinder 
barrel passes the second curved throttling oil channel, a second 
piston rod oil channel is connected with the hydraulic 
system through the second high-pressure oil pipe, circulating pressure oil flow needed by power generation can be realized, the air bag arranged at the bottom of the cylinder barrel is communicated with the energy accumulator and timely generates elastic deformation, the size of the air bag is increased or decreased, and the 
energy feedback shock absorber effectively solves the problem of unequal 
volume change of the upper cavity and the lower cavity of the cylinder barrel when the piston slides.