Objective To learn the immunization status of children in some areas of western China so as to provide scientific basis for improving immunization program. Methods A cross-sectional study with three-stage stratified random sampling method was conducted,and a total of 1 159 children aged 12~23 months old from 14 counties in western China was chosen to investigate their basic informations with self-administrated questionnaire and to get their information of immunization from "vaccination certificate". Results The coverage rate of BCG,the first HBV,3 times of HBV,3 times of OPV,3 times of DPT,the first measles vaccine and all five vaccines were 38.6%,68.4%,34.8%,32.6%,38.5%,25.0%,2.4% respectively,while the qualified vaccination times among children aged 12~23 months were 97.1%,99.2%,93.5%,94.4%,92.6%,54.2%,47.7% respectively.There were positive correlations between hospital delivery rate (HDR) and coverage rate of BCG within 24 h as well as between HDR and coverage rate of the first HBV within 24 h.However,there were still gaps between HDR and the two coverage rates above. Conclusions Timely vaccination was at a low level in these areas.Immunization status still remains to be improved among hospital-born children.