The problem of service scheduling is proposed after the design of structure and function of Satellite Information Application Chain(SIAC). After introducing some basic conceptions about the service scheduling problem of SIAC, the QoS parameters of SIAC and the calculus algorithms are discussed, which can be used as criterions for performance evaluation and service selection of SIAC. After that, the mathematical model of service scheduling problem of SIAC is established, and service scheduling algorithms based on GA are presented. The experimental results indicates the proposed QoS parameters are effective for the evaluation of SIAC and the QoS-based method used for SIAC service scheduling is feasible.