The invention discloses a floating connector, and belongs to the technical field of honing machining. The floating connector comprises a connection body assembly and an auxiliary connection body, wherein the connection body assembly comprises a main connection body and a lower sealing cover; the head part of the auxiliary connection body is accommodated in a floating cavity in the lower end of themain connection body; the lower sealing cover sleeves outside the auxiliary connection body, and is detachably connected with the lower end of the main connection body; a cross block is further arranged in the floating cavity, and slidably connected between the bottom of the floating cavity and the top of the auxiliary connection body; and the auxiliary connection body and the cross block form clearance fit with the inner wall of the floating cavity, and the lower sealing cover forms clearance fit with the outer wall of the auxiliary connection body. According to the floating connector, a structure that the cross block forms horizontal slide fit with the main connection body and the auxiliary connection body is used for replacing a traditional universal joint, so that a tool is enabled tomuch stably float in the horizontal direction, higher honing machining accuracy is achieved, and an orifice is not liable to be machined to be in the shape of a horn; and in addition, due to a centering design during the rotation of the tool, the tool is not liable to swing, accurate entrance into the orifice, of the tool, is achieved, and damage to the orifice is avoided.