With economic development and social progress, people’s material life is constantly improving, the amount of solid waste discarded in daily life is also increasing. White pollution has become a topic of common concern for all human, and the protection of the ecological environment has also received people’s attention. Therefore, the research of environmentally friendly regeneration and biodegradable new materials has attracted the attention of the world. In this environment, PLA fiber which is biodegradable from plants, has become a new textile material and is favored by the market.