External injection composite molding toothbrush

The utility model relates to an external injection composite molding toothbrush which comprises a brush head and a brush handle, the brush head is made of plastic, and the brush handle is made of bamboo. One end of the brush head is a brush head connecting end, and a connecting groove is formed in the brush head connecting end; one end of the brush handle is a brush handle connecting end, the brush handle connecting end is provided with a connecting column, and the connecting column is matched with the connecting groove; a groove is formed in the connecting column, and the connecting groove and the connecting column are connected through an injection molding process. The brush head is made of plastic, so that the defect that a bamboo brush head is easy to mildew in the use process is overcome; the brush handle is made of bamboo, the degradable and renewable characteristics of the bamboo are effectively utilized, the national development concept of replacing plastic with bamboo is met, and sustainable developm