In recent years， the consumption of Chenxiang Tieguanyin has been expanding. In order to understand the quality and safety of Chenxiang Tieguanyin， 89 dried tea materials of Chenxiang Tieguanyin， which are not experienced mixing， were collected from Fujian province. 47 pesticide residues in the samples were detected by ultra-high performance liquid chromatography-mass spectrometry （UPLC-MS）， gas chromatography-mass spectrometry （GC-MS）， etc. The results showed that the pesticides with high detection rate were dicofol （87.64% of the samples contained the pesticide） and fenvalerate （30.34% of the samples contained the pesticide）， the dicofol contents in 37.08% samples exceeded the maximum residue limit （MRL） of China， and the fenvalerate contents in 25.84% exceeded the MRL of China or EU. In addition， 11.24% samples have DDT residues， the contents in two of them exceeded the EU and China MRL. The detection rates of cypermethrin， bifenthrin， cyhalothrin， endosulfan and glyphosate on Chenxiang Tieguanyin were also high， but they did not exceed the MRL of EU and China. 27 pesticides， includes hexachlorocyclohexane， phoxim， fenitrothion， etc. were not detected in all samples. Finally， the degradation effects of dicofol and fenvalerate residues in samples were compared by baking oven treatment， ultraviolet rays treatment and microwave oven treatment. The result showed that the ultraviolet degradation method has the best effect and is a feasible method for the degradation of pesticide residues in dried tea， which is worthy of further study. In this study， although the contents of dicofol and fenvalerate in some of the dry tea materials of Chenxiang Tieguanyin exceed the standard content levels， they are ester-soluble pesticides， and their dissolution rate in tea soup and actual absorption in human body need to be studied. In addition， the late mixing and roasting process may improve the pesticide residues situation of Chenxiang Tieguanyin products.