The invention provides a pushing system and method of combining conventional mobile contents and inferior mobile contents, which integrate local content pushing and network flow perception, and push service contents according to categories based on the redundant capacity of a base station and the time-delay requirement of the service contents. If the redundant capacity of the base station in an area can not support the pushing of the service contents under a time-delay condition, conventional flow is employed to push the service contents after time-delay; if an OTT (Over The Top) server presets a push strategy for the service contents, the service contents are processed according to the preset strategy; if the redundant capacity of the base station in the area is large enough to push the service contents to users under the time-delay condition, the redundant capacity of the base station is first utilized to push the service contents to users. The pushing system and method solve the content pushing problem in a mobile communication network, dynamically combine conventional content pushing and inferior content pushing, not only guarantee certain service quality, improve user experience, but also increase the resource utilization rate of the mobile communication network.