Decompression, ventilation and perspiration type artificial shank socket

The utility model discloses a pressure reduction, ventilation and perspiration type shank artificial limb socket which comprises an artificial limb, a socket body is arranged in the artificial limb, an annular containing groove is formed in the inner side surface of the socket body, a stump protection sleeve is embedded in the annular containing groove, a connecting ring is fixed to the bottom end of the stump protection sleeve, and the connecting ring is fixed to the bottom end of the stump protection sleeve. Two clamping grooves are symmetrically formed in the two ends of the connecting ring, and through holes communicating with the clamping grooves are formed in the surface of the inner wall of the annular containing groove in a penetrating mode. By designing a connecting ring, a clamping block, an annular containing groove, a clamping groove, a second sliding groove, a third sliding groove, a first check block and a spring, mounting and dismounting of the stump protection sleeve are facilitated, time is s