Abstract: Based on partial distribution^[2,3],this paper gives out the concepts and analytic expressions of the behavior indexes of security price,extreme limit price,balanced price,focus price for the first time,particularly gives out the calculating methods of extreme limit price and focus price,the former is beneficial to judging the reversal position of price movement trend under the different significance levels,the latter is beneficial to judging that the focus of current price of security market is reasonable or not.

Key words: partial distribution, security market, price behavior index, extreme limit price, focus price