Hollow fiber composite membrane is one of separation membranes which were prepared from two (or more) kinds of materials through special techniques.The membrane combines the structure characterizes of a hollow fiber (such as self-support) with the separation properties of a composite membrane (such as high-selectivity and high-permeability).At first

materials (or adding materials) of both the composite lay and the substrate membrane were summarized in this article.Then based on the structure properties of the membrane

the hollow fiber composite membranes were classified simply.Preparation technologies and equipments of the hollow fiber membranes were discussed emphatically.At last

the development of the hollow fiber composite membranes in some fields such as pervaporation

gas separation and nanofiltration were described in detail

and some problems deserving further research in this field were discussed too.