Plastic package forming die

The invention provides a plastic package forming mold. The plastic package forming mold comprises a male mold, a middle plate and a female mold, the male die is used for positioning the first part andthe second part; the middle plate comprises a body and a flexible insert, the body is provided with a first through hole and at least one pouring gate, and the first through hole penetrates through the two opposite side faces of the body; the pouring gates are arranged on one side, close to the female die, of the middle plate, one end of each pouring gate is communicated with the first through hole, and the other end of each pouring gate is communicated with a pouring position between the first part and the second part; the flexible insert core is embedded in the middle plate and is in flexible contact with the first part or the second part; the male die is provided with a second through hole, the second through hole penetrates through the two opposite side faces of the male die and is communicated with the first