Knee joint protector and anti-falling buckle structure thereof

The utility model discloses a knee joint protector and an anti-falling buckle structure thereof, and relates to the technical field of rehabilitation protectors. The anti-falling buckle structure comprises a buckle position rotating component and a buckle position base component. A first boss and a second boss are convexly arranged on the buckling position rotating component, a first clamping block is convexly arranged on the first boss, and a second clamping block is convexly arranged on the second boss; the buckling base part is provided with a clamping groove, and the groove bottom of the clamping groove is provided with an avoiding hole. During installation, the buckling position rotating component is moved to the buckling position base component, and the buckling position rotating component is made to rotate relative to the buckling position base component, so that the first boss and the second boss penetrate through the receding holes, the first clamping block and the second clamping block abut against