Abstract: To master the test pasture grass community structure and Solanum rostratum hazard happens and clear Clear two herbicides to Solanum rostratum control effect and influence on other grass pastures,the test was carried out in 2016.Through the experimental investigation and statistical analysis,the preventing effect were all more than 98%for each plant of two kinds of herbicide,and fresh weight were 99.4%at 30 days after treatment;no phytotoxicity to gramineous forage security and broadleaf grass show different phytotoxicity reaction,provide scientific basis for applying herbicides to control Solanum rostratum in pasture.