The automotive rearview housing mold is a specialized tool used for producing the exterior shell of automotive rearview mirrors, playing a crucial role in ensuring the appearance, functionality, and safety of the rearview mirror. In terms of structural design, since the plastic part is symmetrically left and right, the mold cavity layout is designed as 1+1, with the mold design featuring a two-cavity linear side-by-side arrangement. The mold is classified as a large-scale mold, with four chamfered positioning blocks designed at the edge of the mold frame to facilitate the mold's resistance to lateral forces during injection molding, thus maintaining clamping precision. Additionally, when designing the mold, attention must be paid to making the tongue of the core side protrude and the tongue of the cavity side recessed to protect the shut off areas within the mold cavity.