Abstract: A field experiment was conducted to study the effect of sowing quantity on the growth, yield and summer survival rate of white clover (Trifolium repens L.) and its inhibition effect on the biomass of weed. The experiment was conducted from October 2012 to December 2013 in a young waxberry orchard. The results showed that the emergence number and height of white clover increased with the increase of sowing quantity, while the stem diameter, leaf SPAD value and fresh weight decreased. The grass yield of white clover increased significantly with the increase of sowing quantity, when the sowing quantity was less than 15.00 kg/hm², the increase range was relatively high and the difference among treatments was significant, however when the sowing quantity was between 15.00 to 18.75 kg/hm², the increase range was relatively low. The seed yield and summer survival rate increased first and then decreased, the seed yield reached the top when the sowing quantity was 11.25 kg/hm², and the summer survival rate reached the highest value with the sowing quantity of 15.00 kg/hm². The biomass of weed decreased with the increase of the sowing quantity. Therefore, the most suitable sowing quantity was 11.25 to 15.00 kg/hm² in the young orchard in hilly red soil region.