The invention provides a connection joint of a steel pipe and double angle steel. The connection joint includes a cross type bearing device; the steel pipe is provided with a cross type slot at the junction with the double angle steel in the mode of being matched with the cross type bearing device; the cross type bearing device is inserted into the cross type slot of the steel pipe; and the doubleangle steel is fixed on the cross type bearing device. According to the connection joint of the steel pipe and the double angle steel, reliable connection between a power transmission tower and double angle steel main materials can be ensured, and the bending moment and axial force between two main materials are smoothly transferred.