Objective To analyze the factors affecting flow rate of mobile chemo-pump.Methods 815 man-times errors of flow rate were summarized for patients who used mobile chemo-pump, and 8 possible factors affecting flow rate were analyzed with the Logistic regression analysis.Results The normal and abnormal flow rate of 815 man-times errors were 418(59.02%) vs 334(40.98%). In the 334 man-times errors of abnormal flow rate, the flow rate increase were 15 man-times (4.49%), and the flow rate decrease were 319 man-time...