OBJECTIVE: To determine the content and dissolution rate of heavy metals in flower tea, and to explore the effects of drinking tea on human health, and then guide people to drink tea. METHODS: The content of heavy metal arsenic in three common flower teas of lily, chrysanthemum and rose was determined by atomic fluorescence spectrophotometry. At the same time, the immersion process of tea was simulated, and the dissolution rate of arsenic in tea soup was determined and the dissolution rate was calculated. Results: The average values of arsenic in lily, chrysanthemum and rose were 0.700, 0.265 and 0.413 mg / kg, respectively. According to the 2012 Agricultural Industry Standards of the People's Republic of China (NY/T2140-2012), the limit of arsenic ( 0.5 mg / kg), lilies exceeded the standard, chrysanthemums, roses meet the standard; lily arsenic dissolution rate was 6.86% ~ 15.88%, chrysanthemum arsenic dissolution rate was 5.48% ~ 28.42% The arsenic dissolution rate of rose is 63.62% to 83.83%. Conclusion: Although flower tea has certain health care effects, we should also notice the impact of heavy metals in flower tea on human health. In order to avoid excessive intake of arsenic, we should first wash tea and avoid drinking. Soak the tea soup overnight.