The utility model discloses a foot tube locking structure convenient to assemble, a supporting foot and a supporting frame, the foot tube locking structure comprises a first foot tube, a second foot tube, an
interlocking assembly and a deformation
assembly, the first foot tube is sleeved on the second foot tube, the
interlocking assembly is arranged on the second foot tube and is connected with an external power mechanism, the deformation assembly is arranged on the second foot tube, and the deformation assembly is connected with the
interlocking assembly. The deformation assembly has a locking state and an unlocking state; a first mounting seat and a second mounting seat mounted on the first mounting seat are further included, the first mounting seat is mounted on the second foot tube, a plurality of limiting grooves with side ends opened are formed in the first mounting seat and / or the second mounting seat at intervals in the circumferential direction, and the deformation assembly is arranged in the limiting grooves and extends out of the limiting grooves; by means of the structure, one-key quick unlocking and locking of the foot
pipe can be achieved, the unlocking and locking speed of the foot
pipe is increased, meanwhile, displacement of the deformation assembly can be avoided, assembling of the foot
pipe locking structure is facilitated, and very good practicability is achieved.