Novel application of Tanshinone IIA sodium sulfonate in pharmaceutics

The invention relates to a novel application of Tanshinone IIA sodium sulfonate in pharmaceutics, particularly a novel application of Tanshinone IIA sodium sulfonate in preparing radioprotectors. Due to the adoption of Tanshinone IIA sodium sulfonate as the radioprotector, the invention can effectively reduce the damage action of radiation on the radiated object, lower the professional exposure of radiation damage, relieve the toxic and side effects caused by radiotherapy, and prevent biohazard caused by nuclear leak and the like.