The accounting standards for enterprises no. 2 - long-term equity investment of long-term equity investment, according to different conditions, using the cost method and the rights and interests of accounting method. Normally, the enterprise of other units of investment enterprises of the invested entity are common control with control, and the major effect. Usually by 20% and 50% as recognized reference standards (not absolute standard). According to international practice, when investment enterprises have invested enterprise investment proportion reached more than 20%, investment enterprise of the invested entity of a long-term equity investment measured by employing the equity method could, When investment ratio is less than 20%, Requests by cost method, When the proportion of investment by more than 50%, insist to merge program. According to the provisions of the accounting standards for Chinese enterprise shall, usually by employing the cost method of the long-term equity investment situation has two kinds: one is the investment enterprise is able to control the invested entity, Second is the investment enterprise of the invested entity no joint control or significant impact in the active market and has no offer cannot be measured in a reliable way, the fair value. Investment enterprises invested enterprises of joint control or significant influence of a long-term equity investment measured by employing the equity method should be.