This invention discloses a soil retaining device for soil and
water conservation. Its structure includes an inclined plate, movable limiting components, a mounting frame, a base, a blocking device, and reinforcing plates. In use, the device is stably installed at its corresponding position by two inclined plates symmetrically connected to the left and right sides of the base to form an isosceles trapezoidal structure. This effectively buffers the soil. Two reinforcing plates are installed on the left and right sides of the base in conjunction with the mounting frame. The blocking device is installed parallel to the base with the reinforcement plates and mounting frame. Movable limiting components are installed on the left and right sides of the reinforcing plates to connect with the blocking device. These components control the movement limit of the blocking device, preventing excessive movement and failure to return to its original position, thus enabling the blocking device to effectively retain soil.