Objective The Basic-level Diagnostic Criteria of Common Sleep Disorders is established for the clinical spread and clinical application.Method With 40 kinds of main sleep diseases,the related problems on the basic-level diagnostic criteria of common sleep disorders are approached according to Intemational Classification of Sleep Disorder-ICSD, 2001; Classification of Sleep Disorder revised by American Academy Sleep Medicine, as well as domestic related research papers.It has been applied practically and revised repeatedly.Randomly, some of the patients were examined PSG equipment.Result BDCCSD is suitable for base-level hospitals.It is easy for vast numbers of medical staff to master, to apply and spread.BDCCSD, especially, adapts to the major sample of epidemiological survey; and it has been applied to practice.By epidemiological survey and the application of clinical and scientific research, BDCCSD which has been verified is practical and feasible.Compared to random examination with PSG, both the results are basically consistent.Conclusion The establishment and application of EDCCSD embodies its practical, reliable, scientific, advanced, and universal characteristics.So it is worth spreading and applying in basic-level hospitals.