The invention provides a modulation method for yellow sun-cured tobacco. The modulation method includes the steps of firstly, manufacturing rectangular tobacco clamps, installing hooks at the two vertexes of the same long edge of each tobacco clamp, laying tobacco flat on the tobacco clamps, and fixing the tobacco to the tobacco clamps, wherein the length of each tobacco clamp ranges from 1.8 m to 2.2 m, and the width of each tobacco clamp ranges from 0.6 m to 0.8 m; secondly, manufacturing a cuboid sun-curing frame, simultaneously hanging the tobacco clamps on the sun-curing frame through the hooks so that sun-curing can be conducted, and arranging a film at one end of the sun-curing frame for shielding rain; thirdly, adjusting the positions of the tobacco clamps on the sun-curing frame so that airing and sun-curing of tobacco can be combined. The area occupied when the same amount of tobacco is sun-cured is narrowed by ten times due to the hanging sun-curing method, the number of the tobacco clamps managed by one person is increased by eight times, when it rains, a user only needs to push the tobacco clamps into an awning formed by the film at the end of the sun-curing frame, the processing speed is high, airing and sun-curing are combined for processing tobacco, and the quality of yellow sun-cured tobacco is ensured while efficiency is improved.