The invention provides a detachable battery mounting frame structure. The detachable battery mounting frame structure comprises a support bar assembly, an upper frame and a lower frame, wherein the bottom end of the support bar assembly is connected with a chassis frame in a detachable mode; the upper frame is fixed to the upper end of the support bar assembly and the upper part of the upper frame is provided with an upper mounting position used for mounting a battery; the lower frame is fixed to the lower side of the support bar assembly, the upper frame and the lower frame are arranged in parallel, and a lower mounting position for mounting a battery is formed between the upper frame and the lower frame. The invention also provides a car body with the battery mounting frame structure. The car body comprises the chassis frame, wherein the detachable battery mounting frame structure is arranged in the car body and the detachable battery mounting frame structure is connected with the chassis frame. The detachable battery mounting frame structure and the car body have the advantages of being capable of being connected with the battery in the detachable mode and high in structural strength.