Abstract: According to the peculiarity of A type stock market in China‚by suing statistics and financial analytical methods‚the factors influencing the new stock’s price are anslysed．Through the linear regression analysis of the stocks’relative data‚the power value of each facter is obtained‚and a mathematical model to forecast the opening price in the first day of new stock is established．Based on the model‚a computer system is developed．The practice indicates this system is useful to make decision of the investment with new stock’s.

Key words: linear regression analysis, stock, issue price, opening price