Abstract: This paper discusses the theoretical problems of socialist forest price.In man-made forests,timber forest price is the currency expression of the stumpage value and protection forest price is the currency expression of value of forest colony.Because it is not the product of man-labour,natural forest is valueless,but its price can be calculated in the form of stumpage.The economic essence of forest price is the currency calculating of forest land differential income.Value-forming process and value framework of stumpage of manmade forests are analysed.Various factors constituting forest price and the in terrelations between them are further analysed.At last,the calculating model of forest price is developed.