The changes of soil temperature,humidity,nutrient content,enzyme activator,and tree growth were studied in young rubber garden after row covering with different green manure.The ecological and economic benefits of green manure coverage in rubber garden were analyzed.The results showed that young rubber garden covering with different green manure to different extent changed the soil ecological environment,improved the soil pH value,mineral nutrient release and circulation.The accumulation of a large number of green manure which returned as organic material in the field was benefit to the soil organic matter,total nitrogen,alkali solution nitrogen,available phosphorus and available potassium content.In the initial comprehensive cover period,the average input cost for per plant of Z，G and SZ treat was 45.89,46.53 and 49.56 yuan,respectively,which was higher than that of the control group (4236 yuan).But with green manure recycling,supplies and manual input gradually decreased to be less than that of control.The results could provide a scientific basis for improving the green manure technology and cover management technology in young rubber garden.