An assistant apparatus for degenerative joint includes an apparatus main body (1), a first leg-lifting mechanism (2), and a second leg-lifting mechanism (3). The apparatus main body (1) has an upper section (11), a middle section (12), and a lower section (13). The middle section (12) is connected between the upper section (11) and the lower section (13). The upper end of the upper section (11) is provided with a supporting member (111). The lower end of the lower section (13) is provided with a carrying member (131). The upper section (11) is bendable relative to the middle section (12), and the middle section (12) is bendable relative to the lower section (13). The upper section (11), the middle section (12), the lower section (13), the first leg-lifting mechanism (1), and the second leg-lifting mechanism (3) each include an elastic buffering mechanism (S) for providing elastic buffering effects.
