The invention discloses powerless hip joint energy storage walking aiding exoskeleton. The exoskeleton comprises a shank support, a small support leg, a knee joint, a large support leg, a support legassembly, a pelvis support assembly and a backboard assembly, wherein the small support leg is fixed on the shank support and connected with the large support leg through the knee joint, the upper endof the large support leg is connected with the support leg assembly, the upper end of the support leg assembly is hinged with the pelvis assembly fixedly connected with the backboard assembly, and energy storage element is arranged on the support leg assembly. The energy storage element is arranged in an end cover of the hip joint connecting a pelvis support and the large support leg, the energystorage element stores energy produced by stretch of pelvises and hip joints of patients with different injury conditions by pretightening force and is released during curvature movement, and energy consumption for forward movement of gravity centers of patients is reduced.