The finite time H∞ control problem for a class of linear stochastic systems with norm bounded exogenous disturbance is considered. Firstly, the definition of finite time H∞ control of linear stochastic systems is given. Then by constructing Lyapunov-Krasoviskii function and using linear matrix inequality approach, a sufficient condition for finite time H∞ control of linear stochastic systems is presented. Furthermore, the problem is reduced to the optimization problem under the constraint of linear matrix inequalities and the corresponding solving algorithm is given. Finally, an example is presented to demonstrate the effectiveness of the proposed method.