The invention discloses a container for loading and transporting liquid cargo. The container comprises a main container body and sealing heads at the two ends of the main container body. The cross section of the main container body is of square structure roughly, and the main container body is provided with a top plate, a bottom plate and side plates; and the top plate is in circular arc transition with the side plates, and the bottom plate is in circular arc transition with the side plates. According to the container for loading and transporting the liquid cargo, the junction positions of the top plate and the side plates and the junction positions of the bottom plate and the side plates are in circular arc transition, and therefore when the container for loading and transporting the liquid cargo is used for loading and transporting some liquid cargo, the container can bear impact of the liquid cargo, and the strength of the container can meet the requirement for loading and transporting the liquid cargo, and meanwhile, the enough volume can be ensured.