Abstract: In order to compare the differences of main production performance between Inner Mongolia Erlangshan cashmere goat and Mongolia Brown cashmere goat, sixty cashmere goats for each variety were selected and their main production performance were determined and statistically analyzed. The results revealed that the body slanting length, chest circumference and cashmere yield of Erlangshan cashmere goat were very significantly higher than those of Mongolia Brown cashmere goat（P〈0.01）, and the cashmere fibre diameter and body weight of Erlangshan cashmere goat were significantly higher than those of Mongolia Brown cashmere goat（P〈0.05）; there were very significant correlation between height at withers, body slanting length, chest circumference and body weight in both varieties（P〈0.01）, and the highest correlation value was observed in chest circumference;while there was a positive correlation between cashmere fibre diameter and cashmere yield in both varieties, no statistical significances were observed（P〈0.05）; very significant correlation between cashmere fibre length and cashmere yield in Erlangshan cashmere goat was found（P〈0.01）; there was a negative correlation between height at withers, body slanting length and cashmere fibre length in both varieties; a negative correlation between chest circumference and cashmere fibre length in Mongolia Brown cashmere goat was also observed. It was demonstrated that the comprehensive production performance of Inner Mongolia Erlangshan cashmere goat is superior to that of Mongolia Brown cashmere goat.