Determining the hot spot stress distribution along the intersecting weld of a tubular joint is the basis for calculating the peak value of hot spot stress. The study on the hot spot stress distribution along the intersecting weld of circular hollow section（CHS）T-joints is carried out and a stress distribution curve equation under out-ofplane bending moment is proposed. The finite element mesh model of CHS T-joints is established by the radial ten? sion method. The reliability of the calculation results of hot spot stress distribution at the weld toe is analyzed. The stress analysis results of three mesh models with different mesh densities are compared，which shows that the basic mesh density meets the requirements of calculation accuracy. The hot spot stress distribution along the intersection line of CHS T-joints under out-of-plane bending moment is analyzed，utilizing experimentally validated FEA mod? els，and the effects of four dimensionless geometric parameters on the shape of stress distribution curve are investigated. On this basis，the curve revision formula based on trigonometric sine function is proposed and determined. The statistical analysis compared with the UCL formula and experimental data shows that the formula proposed in this paper has higher accuracy.