The present invention discloses a half fork for shoe molded insole, comprising a rigid plastic injection-molded main body, and a waist core integrated in the main body as a whole by plastic injection molding, wherein the main body has at least one locating hole on the upper and/or lower surfaces thereof in the waist core region, and bevels on the edges thereof. The half fork further comprises a surface material layer on upper and/or lower surfaces of the main body; the material of the surface material layer is fabric, paper or plastic. The half fork disclosed by the present invention will not deform easily under the pressure caused by the weight of the wearer, even in the humid environment or under the condition of being soaked, it is more comfortable, durable and artistic.