The invention discloses a detachable shock absorber. The detachable shock absorber comprises an oil storage barrel, a work cylinder, a guide assembly, a compression valve assembly, a plugging head, a connecting rod and a piston; the work cylinder is arranged in the oil storage barrel in a sleeved manner, the guide assembly and the plugging head are fixedly plugged at the two ends of the work cylinder and are detachably fixed and plugged to the two ends of the oil storage barrel correspondingly, a work cavity is formed in the work cylinder, an oil storage cavity is formed in the oil storage barrel and the work cylinder, the axial end of the work cavity is communicated with the corresponding axial end of the oil storage cavity, one end of the work cavity is communicated with the other end of the oil storage cavity through a compression valve assembly, the piston can be axially arranged in the work cylinder in a sliding manner and divides the work cavity into two portions, a valve plate enabling two portions of the work cavity to be communicated is arranged on the piston, one end of the connecting rod is fixed to the piston, the other end of the connecting rod can axially and outwards penetrate the guide assembly in a sliding manner, and an oil seal assembly is arranged between the guide assembly and the connecting rod; the guide assembly and the plugging head are detachably and fixedly plugged at the two ends of the oil storage barrel, and oil changing and replacement of the valve plate and the oil seal assembly can be conveniently and rapidly achieved.