A human body massage device, comprising: a massage assembly; a massage assembly mounting bracket, configured to mount the massage assembly, and having a shaft disk fixing groove; and a leg clamping structure, mounted on the massage assembly mounting bracket and configured to be clamped and fixed to the leg of the human body, wherein the massage assembly comprises: a first massage arm; a first massage head, rotatably connected to the first massage arm to massage acupoints and skin near an anus along with a motion of the first massage arm relative to a human body; and a rotation locking structure, arranged between the first massage arm and the first massage head to adjust, lock or unlock a rotation angle of the first massage head relative to the first massage arm, wherein the massage assembly further comprises: a shaft disk mounting shell, a rotating shaft disk and a torsional spring structure, the rotating shaft disk and the torsional spring structure are arranged in the rotating disk mounting shell, the rotating shaft disk is fixedly connected to the first massage arm and forms an elastic rotating structure of the first massage arm relative to the shaft disk mounting shell by the torsional spring structure; and the shaft disk mounting shell is detachably mounted in the shaft disk fixing groove. a massage assembly; a massage assembly mounting bracket, configured to mount the massage assembly, and having a shaft disk fixing groove; and a leg clamping structure, mounted on the massage assembly mounting bracket and configured to be clamped and fixed to the leg of the human body, wherein the massage assembly comprises: a first massage arm; a first massage head, rotatably connected to the first massage arm to massage acupoints and skin near an anus along with a motion of the first massage arm relative to a human body; and a rotation locking structure, arranged between the first massage arm and the first massage head to adjust, lock or unlock a rotation angle of the first massage head relative to the first massage arm, wherein the massage assembly further comprises: a shaft disk mounting shell, a rotating shaft disk and a torsional spring structure, the rotating shaft disk and the torsional spring structure are arranged in the rotating disk mounting shell, the rotating shaft disk is fixedly connected to the first massage arm and forms an elastic rotating structure of the first massage arm relative to the shaft disk mounting shell by the torsional spring structure; and the shaft disk mounting shell is detachably mounted in the shaft disk fixing groove. a first massage arm; a first massage head, rotatably connected to the first massage arm to massage acupoints and skin near an anus along with a motion of the first massage arm relative to a human body; and a rotation locking structure, arranged between the first massage arm and the first massage head to adjust, lock or unlock a rotation angle of the first massage head relative to the first massage arm, wherein the massage assembly further comprises: a shaft disk mounting shell, a rotating shaft disk and a torsional spring structure, the rotating shaft disk and the torsional spring structure are arranged in the rotating disk mounting shell, the rotating shaft disk is fixedly connected to the first massage arm and forms an elastic rotating structure of the first massage arm relative to the shaft disk mounting shell by the torsional spring structure; and the shaft disk mounting shell is detachably mounted in the shaft disk fixing groove.