Conclusion Venous Indwelling Needle protection foil changed every day and not reduce the incidence of complications, should be considered in patients with conditions.

Objective to analyze the elderly with chronic diseases Venous Indwelling Needle protective film to replace the time and the incidence of complications.

Conclusion in NSCLC chemotherapy, there are fewer complications in PICC than those in CVC and common counterpart, which can protect vascular, but its long-term safety is deserved to explore.