By using the author's self-made RS-81-1 TL dating device, the TL dating and microscopic structure analysis on calcite veins in 2 fault shatter belts in Yudong reservoir, Yunnan Prov., China, are done. The result shows that there are 4 groups of calcite veins which form in different time, among them 3 groups have been deformed. F₁ fault since 15×10⁴ years and F₂ fault since 25×10⁴ years have no evidence of activity. The surface characteristic analysis on quartz coarse-grain indicates the same result with TL dating method.