The utility model relates to a squeezing-type juice-squeezing mechanism. The squeezing-type juice-squeezing mechanism comprises an outer shell body, a screw rod and a front cover movably connected with the outer shell body, wherein the outer shell body and the front cover are combined in a covering mode to form a barrel-shaped inner cavity, the screw rod is arranged inside the barrel-shaped inner cavity, a gap used for squeezing juice-squeezing materials is reserved between the screw rod and the inner walls of the outer shell body and the front cover, one end of the screw rod penetrates an end surface of the outer shell body and moves in the axial direction, and the screw rod is respectively provided with a first limiting device and a second limiting device which are used for limiting the screw rod to exceed a set moving area in the axial direction. According to the squeezing-type juice-squeezing mechanism, the screw rod has a certain freedom degree in the axial direction so that the axial direction of the screw rod can be automatically adjusted according to the size of the juice-squeezing materials, and the juice-squeezing mechanism is suitable for various juice-squeezing materials. Meanwhile, an impeller part main body is arranged as a convex prism, a feeding port is tangent with an inner cavity of the outer shell body, the materials can be effectively cut, the pressure on a juicer in the feeding process is relieved, and the juice-squeezing efficiency is improved.