By adopting the physical deposition technology, the fluorinated polyethylene membrane has been modified, and a research has been conducted on the effects of Titanium modification on the structure and property of fluorinated polyethylene membrane. The research shows that the fluorinated polyethylene membrane coated with Titanium helps to retain the characteristics of polyethylene membrane itself, as well as improve its thermal shrinkage performance and safety performance. Testing data of coin cells show a consistence between the coulombic efficiency of the modified fluorinated polyethylene membranes with deposition time of 30 min and that of the unmodified membranes. However, its discharge capacity retention rate is better than the unmodified fluorinated polyethylene membranes. And the results reveal that the Ti layers deposited on the fluorinated polyethylene membrane surface is characterized with the ability to insert and extract the lithium-ions.