Objective To find out the problems and deficiencies in colposcopy through the quality control of colposcopy in 19 hospitals in Zibo City， so as to put forward constructive opinions and suggestion to improve the accuracy and standardization of colposcopy by the doctors in local hospitals.

Methods A total of 21 hospitals with colposcopy examination in Zibo City were selected as the research object. The quality control standards were formulated and the case data in the early stage were evaluated. Two hospitals had less than 10 cases completed each year and no on-site quality control.A total of 19 hospitals had on-site quality control with the operation process of colposcopy instrument on site， the configuration of colposcopy， the proportion of colposcopy examination reagents used in the department of pathology， and the operation period of colposcopy examination， as well as the on-site observation report. The qualified rate of each hospital were counted and analyzed.

Results The quality control results of 19 hospitals showed that the qualifications and the clinical practice of obstetrics and gynecology for more than 3 years reached 100.00%. Those who complete more than 100 new diagnosis cases each year and those who have been trained for more than 3 months are gradually increasing. The pathological specimens met the needs and the positive predictive value of high-grade squamous intraepithelial lesion was significantly improved in the quality evaluation indicators of colposcopy （all P<0.05）.In the basic elements of the colposcopy report， there were statistically significant differences in 5 aspects：adequacy of the examination， the description of specific images， the interpretation of key images， the diagnosis of the colposcopy， and the post-examination processing through 2 colposcopy quality control comparisons （all P<0.05）.

Conclusion The overall level of colposcopy in Zibo City has been significantly improved through the comparison of the quality control results of two colposcopy. We can improve the quality of colposcopy effectively through regular quality control.