Abstract: In order to study the pollution situation caused by heavy metals in both soil and tea-leaf in tea gardens in Hangzhou and its possible sources, the author chose 20 typical tea gardens in Hangzhou and divided them as gardens of suburb-chemical fertilizer, suburb-organic fertilizer, mountainous area-chemical fertilizer and mountainous area-organic fertilizer according to the location and fertilization. The author collected 0-15 cm (surface soil) and 45-60 cm (bottom soil) soil samples and both new and old tea-leaf samples for analyzing Pb, Zn, Cu, Cd, Hg, Cr and Co content. The results showed that the pollution of Pb, Zn, Cu, Cd, Hg, Cr and Co in soil were not obvious, concentrations of those metals were lower than The Second Level Standard of Soil Environmental Quality. Except Pb in 25% samples of old leaves exceeded the safety standard, other elements in both new and old leaves were within the limiting value. The soil concentrations of Pb, Cd and Hg in suburb tea gardens were generally higher than those in mountain tea gardens. The soil concentration of Cd in chemical fertilizer tea gardens was slightly higher than that in organic fertilizer tea gardens. The soil concentration of Hg in organic fertilizer tea gardens was slightly higher than that in chemical fertilizer tea gardens. The soil concentrations of Zn and Cu in organic fertilizer were much higher than those in chemical fertilizer tea gardens. Application of organic fertilizer could slightly increase Cr concentration in soil. Concentration of Co was not related to human activity. It was concluded that the accumulations of Pb, Cd, and Hg in soil were mainly related to atmospheric deposition, and the accumulations of Cu and Zn in soil were mainly related to the application of organic fertilizer.