The modified model develops the usability of L-G model in the practice of M & A because it takes maximization enterprise value as the guidance,bases on the stock intrinsic value and take full account of two key elements of merger synergies effect and the domination.

This paper use the improved dividend discount model(DDM) to estimate the stock intrinsic value, and use the factor analysis method to study the relationship between the financial indicator and stock intrinsic.

The Theory of the Stock Intrinsic Value and the Bubble of China s Stock Market;

Dynamic programming for solving growth-stock value and optimizing dividend payout paths;

Empirical analysis of the optimal capital structure in the reclaimed water industry was done according to the optimal capital structure research model which based on the maximization of company s stock value and the data from listed companies.

Based on the uncertainty of stock value, the stock value spread curve can be drew up.

The article discusses investment horizon of value investment and comes to the conclusion that investors should not hold value-oriented stocks in the long run;the holding of growth stocks without long-term competitiveness will not produce good return if investors them in a long term;it is profitable to hold growth stocks with long-term competitiveness in the long-term.