The invention belongs to the technical field of equipment for fused salt nuclear reactors, and particularly relates to a U-shaped heat exchange pipe resistant to high-temperature fused salt corrosion.The effect of effectively preparing the U-shaped heat exchange pipe for a fused salt nuclear reactor is achieved through the specific raw material proportion and a preparation process and selective specific stress relief annealing operation. The U-shaped heat exchange pipe has the advantages that the high-temperature resistance and fused salt corrosion resistance effects are good, the overall preparation process is reasonable and effective, a proper critical value, namely the bending radius is 11 times the outer diameter, of whether stress relief annealing operation is required or not is selected, a U-shaped heat exchange pipe with the bending radius being more than 11 times the outer diameter does not need annealing, energy is saved, and the overall structure performance of the U-shapedheat exchange pipe is excellent.