The invention discloses a stirring device for raw materials of plastic products, relates to the field of the plastic products, and solves the problems of low mixing and stirring efficiency of the rawmaterials of the plastic products in the prior art. According to the technical key points, the stirring device comprises a shell, and a discharging port is formed in the lower part of the shell. A liner stirring mechanism is arranged in the shell, and an isolation pipe is fixedly arranged in the liner stirring mechanism. A raw material lifting mechanism is arranged in the isolation pipe and is fixedly connected onto a mounting cover, and a feeding pipe port and a second feeding pipe are arranged on the mounting cover. The feeding pipe port is glidingly connected onto the mounting cover, and the second feeding pipe is fixedly connected onto the mounting cover. The stirring device completes the mixing and stirring of the raw materials by the arrangement of a liner rotating mechanism and theraw material lifting mechanism. Compared with the prior art, the stirring device has high mixing and stirring efficiency and can achieve even mixing. Meanwhile, the stirring device also has a temperature control function.