The invention discloses an led embedded lamp with the lighting angle capable of being automatically adjusted. The led embedded lamp comprises a rectangular shell. A lower main shell is fixed to the bottom face of the rectangular shell. A main through hole is formed in the middle portion of a front wall plate of the rectangular shell. A lamp body is arranged in the rectangular shell. A face cover at the front portion of the lamp body is located in the main through hole. The lamp body comprises the face cover and a main shell, the face cover is fixed to the front end face of the main shell through a bolt, a lens is arranged at the middle portion of the face cover, a rotation shell is fixed to the rear wall face of the main shell, and spline inserting holes are formed in the top face and the bottom face of the rotation shell. The led embedded lamp is not provided with an installing base and can be directly inserted in a groove formed in a wall and does not occupy too much space; meanwhile, the main shell can be automatically rotated so that lighting angle adjustment can be achieved, and the heat dissipation effect can be improved through a heat dissipation fan of the led embedded lamp; meanwhile, in the rectangular shell of the led embedded lamp, a lower shell and an upper connecting plate are fixed through a bolt, the rectangular shell is convenient to detach, so that detachment and replacement of inner components are convenient, and replacement and maintenance are convenient.