Plant community assimilation box with built-in light source

The invention discloses a plant community assimilation box with a built-in light source. The box comprises an aluminum top cover, an assimilation box body, a direct connecting piece and an assimilation box base, wherein the aluminum top cover is hermetically fixed at the top of the assimilation box body to form an assimilation box main body, and the assimilation box main body is hermetically connected with the assimilation box base through the direct connecting piece; the aluminum top cover is provided with a gas circuit outlet quick connector, a light source, a gas circuit inlet quick connector, a mixed fan, a fan metal net, a direct-current power supply DC connector and a light source switch, the light source adopts an LED constant-current driving light source module, and the mixed fan is installed on the gas circuit inlet quick connector. Compared with the prior art, the assimilation box is advantaged in that the assimilation box is convenient to carry, rapid to install, high in energy utilization rate of plants and stable in strength, the influence of the greenhouse effect can be greatly avoided, and uniformity of illumination in the assimilation box can be guaranteed through reflection of aluminum foil on the inner wall.