The invention discloses an embedded wheelless damper for a hanging door. The embedded wheelless damper comprises a damper body and a positioning sheet, wherein the damper body comprises a shell mechanism and a buffer mechanism; the shell mechanism comprises an upper shell body and a lower shell body; a first groove is formed in the lower shell body; a second groove is formed in the upper shell and provided with a clamp opening; the buffer mechanism comprises an upper release claw, a lower release claw, a poke sheet, an internal drawing plate, a transmission part, a buffer part and an elastic part; the lower release claw is provided a notched part and coupled with the transmission part; a transmission rod of the transmission part penetrates into a rail hole of the internal drawing plate; the transmission part is coupled with the poke sheet; the upper release claw is coupled with the internal drawing plate; a release rod of the upper release claw penetrates into a poke hole of the poke sheet; the upper end of the release rod is inserted into the second groove; and the positioning sheet is provided with a positioning column. The embedded wheelless damper disclosed by the invention has the advantages that the action is reliable, the effect of buffer return is ideal, and no special rail and wheel are needed because the damper body can be directly embedded in a rail. Accordingly, the embedded wheelless damper is applicable to various rails, convenient to mount and relatively low in mounting cost.