The invention discloses a test method for the stability of tea polyphenol added in cigarettes, which relates to the cigarette technical field. The test method has the following steps that: (1) cigarettes to be tested are placed into a constant temperature oven, and the constant temperature state is maintained; (2) the test method is as follows: the parts added with the tea polyphenol are crushed and then are placed into methanol water solution for leaching, high-efficient liquid phase chromatography is used to test; (3) 30 cigarettes are taken out from the constant temperature oven for testing each two to three days, which is continuously performed for 5 to 10 times; (4) according to the comparison between the test result and the initial data tested before the cigarettes are stored, the reduction rate of the content of active ingredients of the tea polyphenol is obtained further to estimate the time limit that the cigarettes are stored. The test method has simple preliminary treatmentto the sample, short test time, less test indicators, and simple test process.