In this paper a real-time Parcel Post Checking Speech Recognition System is developed.This system can achieve the parcel post information checking and verification by means of a medium vocabulary speaker-independent continuous speech technology.Input speech can be Mandarin or Sichuan dialect.Vocabulary size is about 4500.By employing the advantages of the rejection model and speaker adaptation technology

the system's robustness is improved remarkably.The experiments show that the system has a very good performance.For mandarin voice input

the recognition accuracy of the top one candidate is 98.7%

and the recognition accuracy of the top three candidates is 99.9%; For Sichuan dialect one the recognition accuracy of the top one candidate is 95.9%

and the recognition accuracy of the top three candidates is 98.6%.