In 2007, the premium of the unit-linked life insurance Increased month by month, reaching 367% positive growth throughout the year,the premium of the Universal Life Insurance was up to 84.

Entering the 21 century, the prosperous capacity market speeds up the development of the investment-linked life insurance of our country.

What s wrong with the investment-featured life insurance in China and what does its future look like? Based on plentiful facts and data, this paper is trying to find the answers to the questions by international comparison, applying the knowledge and principles in fields of i.

The history of international life insurance has proven that life insurance investment is the mainstay propelling the reform and development of life insurance which determines the direction and fate of development of life insurance.

Today, the competence of life insurance market is become more and more intense, life insurance investment is become a main channel of life insurance company make up for a loss of accept guarantee slip and get high profit.

The paper presents an upper limit for the premium of equity-linked life insurance with a minimum guarantee and periodic premiums by the definition of brownian motion and Schwarz inequality under the assumption that the price of reference investment fund follows a geometric Brownian motion,and verifies its rationality by the method of Monte Carlo simulation.

Large scale surrender risk of equity-linked life insurance may largely affect stability and liquidity of life insurance company\'s fund managing.