Objective The reactivity of the PICC comprehensive maintenance model and the ward maintenance model was evaluated.The differences between these two models were compared so that the better maintenance model could be chosen for improving the service of the PICC comprehensive maintenance model. Methods Four hundred and fifty patients with the PICC catheter were chosen randomly.Three hundred and forty patients received the PICC comprehensive maintenance model (mainly in the out-patient department and combined with the network maintenance ).One hundred and ten patients received the ward maintenance model (mainly in the in-patient ward).The WHO reactivity questionnaires of health system were provided.The results of the valid questionnaires were calculated and analyzed.Results Four hundred and twenty-nine questionnaires (326 for the comprehensive maintenance model and 1 03 for the ward maintenance model)were collected.The reactivity evaluation of confidentiality,communication,autonomy,timeliness,basic facilities and selective dimension in the comprehensive maintenance model were significantly higher than those in the ward maintenance model (P <0.05).There were no significant differences in the reactivity evaluation of dignity and social support dimension between the two groups (P >0.05).Conclusions The reactivity evaluation of healthy system in the comprehensive maintenance model is higher.It can provide timely and convenient PICC service and meet the expects and demands of patients.