The invention discloses a decoupling type six-dimensional force detection device, which relates to a detection device and aims to solve the problems of complex structure and process and poor adaptability of an existing six-dimensional force detection device. The decoupling type six-dimensional force detection device comprises an objective table, a six-dimensional force converting plate, a base and a six-dimensional force sensing detector, wherein the six-dimensional force sensing detector comprises an elastic body and 20 strain gages; the elastic body comprises a square frame, an elastic connecting frame, two elastic pieces, two first cantilever beams, two second cantilever beams, two third cantilever beams, two fourth cantilever beams, two fifth cantilever beams and two sixth cantilever beams; the elastic connecting frame is installed in the middle of the square frame and comprises a bending elastic plate, two long straight elastic plates and two short straight elastic plates; the six-dimensional force sensing detector is removably connected with the base, the objective table is removably connected with the six-dimensional force converting plate, and the objective table is removably connected with the six-dimensional force sensing detector. The decoupling type six-dimensional force detection device is suitable for walking robots.