Effects of different weed control treatments in tea garden were studied to find out an approach of low cost，good effect，non-pollution to deal with weeds，and provide theoretical support for green and efficient weed control.Four treatments were carried out in the same young tea garden from 2019 to 2020，including clean tillage(CK)，intercropping with‘ Chafei No.1’(T1)，weed barrier fabric(T2)and black plastic film(T3).Weed biomass，tea yield，tea quality composition，soil physical and chemical properties，soil enzyme activity in four treatments were monitored，and economic profits were compared and analyzed.The result that the amount of weed biomass was CK>T3>T1>T2，and CK was significantly higher than other treatments.No significant differences in tea yield and quality composition among four treatments were observed.Yield and phenol ammonia ratio in T1 were slightly lower than other treatments.Soil moisture for T1，T2 and T3 was 76.5%，78.2% and 63.8%，respectively，and was significantly higher than that for CK(49.8%).Soil pH of T2 was 7.3% lower than that of CK.T1 could improve soil fertility，while T2 and T3 may reduce soil hydrolyzable nitrogen and available phosphorus content.Soil amylase activity was T3>T1>CK>T2，and T2 was significantly lower than other treatments.Soil polyphenol oxidase was T1>CK>T2>T3，and there were significant differences among the treatments.Catalase activities in T1，T2 and T3 was 3.1%，2.8% and 4.9% lower than that in CK，respectively.Soil acid phosphatase activity in T1 was significantly higher than that in CK.Soil acid phosphatase activity of T2 and T3 was slightly lower than that of CK.Soil polyphenol oxidase activity in rhizosphere(T2R)，weed cloth edge(T2WCE)and middle of the big lines(T2MBL)of T2 was 29.28，57.60 and 17.16 mg·g-1· 24 h-1，respectively.Soil catalase activity of T2WCE was significantly higher than that of T2R and T2MBL.Soil urease activity for T2MBL was significantly lower than that for T2R and T2WCE.Soil nitrate reductase activity in T2MBL was significantly higher than that in T2R and T2WCE.The total annual cost per hectare in T1，T2 and T3 was 79.5%，62.6% and 58.3% of CK，respectively.Our data suggested that T2 had the best overall effect，but there are still some problems to be solved，such as the decreasing of activity of related enzymes involved in the decomposition of organic carbon，phosphorus and other elements，and the promoting of denitrification.