给出了计算曲梁剪应力和径向应力的一种新方法，即直接对剪应力积分方程进行求解。所得剪应力和径向应力解析公式不仅满足平衡方程，且满足曲梁上、下表面处力的边界条件。算例表明，与其它采用了附加假设的近似解相比，这种新方法的解具有很高的精度，同弹性理论解非常接近。 A new method of calculating shear stress and radial stress of curved beam is given, ie, the integral equation of shear stress is solved directly. The analytical formula of the obtained shear stresses and radial stresses not only satisfies the equilibrium equation but also satisfies the boundary conditions of forces at the upper and lower surfaces of the curved beam. The example shows that compared with other approximate solutions that use additional hypotheses, the solution of this new method has high precision, which is very close to the solution of elastic theory.