Based on plots experiments of 1993~2002 in the south dump of Antaibu opencast coal mine, the water erosion characteristics and the erosion control profit of vegetations in the 3 stages of newly-constructed, the 2nd year and 10th year of reclamation are analyzed. The empirical models of water and soil erosion are brought forward. The erosion control profits of the vegetation patterns in the plots are compared, and the measures of suitable revegetation and erosion control are proposed and improved.