Abstract:Abstract: Objective Investigate and understand Chinese medical staff’s knowledge, attitude and practice (K-A-P) towards the nutritional oncology, to provide a basis for the training of the nutritional oncology, and the improvement on clinical treatment. Methods This is a multicenter, prospective and observational study for about 3036 medical staffs from 138 hospitals in the 13 provinces of China, to collect and summarize the K-A-P scores in questionnaires. Results The overall mean±SD for K scores was 41.26±23.68, the pass rate was 35.31%, and the good rate was 12.48%. The overall mean±SD for A scores was 82.23±12.63, the pass rate was 96.57% and the good rate was 69.37%. The overall mean±SD for P scores was 73.03±15.06, pass rate was 85.64% and the good rate was 39.86%. The correlation coefficient between the K scores and A scores was 0.136 with P value less than 0.05, the correlation coefficient between the K scores and P scores was 0.179 with P value less than, which means there are correlations between the K scores and A scores, the K scores and the P scores. The pass rate of K scores for the male medical staff was higher than the female (P>0.05), but there is no significant difference for the A scores and P scores in the gender of the medical staffs (P< 0.05). The K-A-P scores, pass rate and good rate for doctors were higher than those for the nurses and the medical technicians (P< 0.05). And the medical technicians in senior levels have a higher K scores and P scores than the junior levels (P<0.05). But there is no significant difference for the A scores among the title levels (P>0.05). The mean value, pass rate and good rate for K-A-P scores in medical staffs with higher degrees were superior than lower degrees (P<0.05). The surgeons have higher K-A-P score, pass rates and good rate than others (P<0.05). The medical staff in teaching hospitals showed a higher K-A-P scores, pass rate and good rate than others. There is no significant difference for K scores and P scores, and the pass rates, good rates between medical staffs in general hospitals and oncology hospitals (P>0.05), but there is a higher P scores and the pass rate in general hospitals (P<0.05). The study time on nutritional education is less than 10 percentages of the full time for 58.41 percentages of the medical staff. For about 52.71 percentages of medical staff want to work on the research project for nutritional. The nutritional knowledge of medical staff were majorly from working experience (66.22%), professional books and magazines (65.40%), and the experiences in school (61.25%). Conclusions The Chinese medical staff have a positive attitude and good strategies for nutritional treatments, but the nutritional knowledge should be improved accordingly, more training for the nutritional knowledge are needed.