Due to its excellent mechanical properties, processing properties and biodegradability, polylactide (PLA) has been widely concerned in recent years. In order to reduce the cost and obtain the better product properties to expand its application, the work aims to blend PLA with natural cellulose from a wide range of sources as a green and effective way. The recent studies on the natural fiber reinforced PLA composites were reviewed by sorting out the mechanical properties, thermal properties and degradation properties of the composites. Then, the development trend was also put forward. The preparation and improvement of PLA matrix composites with different types, proportions and forms of natural fibers for multifunctional applications have been investigated, which can reduce the cost and obtain the better product properties to expand the application.