The quality of experience (QoE) of users has become an important factor concerned by service providers to keep users for their services. The measurable quality of service (QoS) refers to technical performance, not the satisfaction of users, but it is closely related to user's QoE. Most existing researches mainly focus on studying the QoE-QoS relationship for services in terrestrial network with rare attention on satellite networks. Multimedia services delivery over satellite networks is a promising service in emerging future Internet, thus it is appealing to analyze how service QoE depend on QoS in satellite networks. In this paper, we build a simulated satellite network based on OPENT software to measure the QoS parameters and obtain the distorted videos/voices. Then, based on the original and distorted video/voice sequences, we perform a subjective test to obtain the subjective opinion scores representing user's QoE. Finally, on the basis of the collected data, the influence of single QoS parameter on QoE is analyzed and the QoS parameter thresholds to different QoE levels are provided.