Objective To discuss the value of colposcopy in application to the clinical screening of cervical diseases.Method To conduct a comparative analysis of the results of the biopsy examination of cervical tissues and the results of the electro-colposcopy examination of 400 patients of cervical diseases

and observe the differences of the results of colposcopy examinations of the patients of different ages.Results The examinations by electro-colposcope indicated 7cases of cervical cancer

335 cases of cervicitis

39 cases of CIN I degree

and 19 cases of CIN II and III degree.Scope positioned biopsy sent for pathological examination confirmed 7cervical cancer cases

35 CIN I degree cases

and 18 CIN II and III degree cases against which the electro-colposcopy demonstrated an accuracy rate of 100.0%

89.7%

and 94.7%respectively.Chronic cervicitis claimed a fairly large number of patients of 21 to 30years old

cervical dysplasia saw a large representation in patients from 51 to 60

while all the patients of cervical cancer were above 41.Conclusion Conducting clinical screening of cervical diseases through colposcopy has a high accuracy rate

facilitates an early detection of CIN

and can effectively improve the diagnostic rate in combination with histological examination

thus has an important value to the clinical screening of cervical diseases.