In the industry process, the delayed time is possible to change, and the uncertainty of delayed time can sharply increase the difficulty of the control. Based on Time-Delay Dependent State Feedback Predictive Control (DDSFPC) algorithm and Lyapunov functional method, this thesis deals with the system with uncertain state time-delay. The delayed time is led into the matrix, a sufficient condition for the range of the uncertain delayed time is provided via LMI. It also provides the range of the delayed time, which can make sure of the stability of the system. The validity of the above condition is proved by representative example.