The invention discloses a control method for real time task admission for shared resource network. The invention is to provide a control method for network admitting real time task so that the admission is not only performed but satisfy the demand for time limit. The technical scheme: first establishing real time task admission controller for network composed of resource status statistical analysis module, real time task application pretreatment module, real time judging module and admission and decision-making module. The resource status statistical analysis module gathers, calculates and analyzes the network resource status; the real time task application pretreatment module pretreats the real time task application; the real time task judging module judges necessary and sufficient condition of executable task; if several window time periods satisfies necessary and sufficient condition, then window time period of maximum executable probability is selected; the admission and decision-making module makes decision for real time task and forms notice for admission or not. The invention can performs network admission control for real time task.