Downward digging type earth wall sunlight greenhouse

A downward digging type earthen wall sunlight greenhouse relates to the technical field of vegetable cultivation and comprises a rear wall, a cultivation groove is formed outside the rear wall, an auxiliary cultivation bed is arranged inside the rear wall, a cultivation bed is arranged on one side of the auxiliary cultivation bed in a sinking mode, a waterproof platform is arranged between the cultivation bed and the auxiliary cultivation bed, and a rear slope facing the cultivation bed is arranged on the top of the rear wall in an upward inclined mode. A heat storage auxiliary wall is arranged between the lower surface of the rear slope and the top of the rear wall. The solar greenhouse solves the problems that a rear wall body and a shading surface thereof cannot be fully utilized, the land utilization rate is low, the solar greenhouse is not suitable for being built in areas with high underground water levels, and the application range is limited in the traditional technology. 下挖式土墙日光温室，涉及蔬菜栽培技术领域，包括后墙，后墙的