The invention relates to a skid-mounted type filling station. The skid-mounted type filling station comprises a tank body which is used for allowing oil to be filled and discharged, wherein an oil outlet for allowing the oil to be discharged is formed in the tank body, and an oil discharge pipeline is connected to the oil outlet; the oil discharge pipeline comprises a connecting segment connected with the oil outlet, a U-shaped segment connected with the connecting segment, and an oil discharge segment connected with the U-shaped segment, and the convex direction of the U-shaped segment is opposite to a gravity direction. A valve for controlling oil materials to be filled and discharged is connected to the oil discharge segment, when the valve is damaged, the U-shaped segment is convexly arranged in the direction opposite to the gravity direction, so that under the action of gravity, the U-shaped segment can prevent the oil from flowing out from the oil tank.