Objective To evaluate the therapeutic effects of Power PICC saline only locking option(SOLO)catheter in tumor patients.Methods One hundred and ten tumor patients admitted into the Tumor Diagnosis and Treatment Center of the hospital from April 2017 to July 2017 were recruited as research subjects.In accordance with different ways of catheterization,the patients were di-vided into two groups,each consisting of 55 patients.The observation group underwent Power PICC SOLO catheterization, while the control group had Power PICC catheterization.Then, incidence of complications during catheterization was compared between the 2 groups.Results There was only one case of thrombosis(1.8%)and no case of vessel obstruction(0%),which were significantly low-er than those of the control group [respectively 6(10.9%)and 3 cases(5.4%)],and there was statistical significance when compar-isons were made between them(P<0.05).Conclusion Power PICC SOLO catheter had the advantages of fewer complications,lighter nursing load,and it could meet treatment needs during different stages of treatment.More importantly,it was beneficial to those patients with blood coagulation disorder.