The vertical disintegration and integration in Global Value Chain are two important characters in the global economy today, which call for more theoretical and empirical research to better explain the effects of global value chain on different national industry and economy. The paper presents insights into the role of vertical disintegration of global value chain on the performance of textile and apparel industry on the side of developing country. As one of earliest open industries, China's textile and apparel industry has inserted the global value chain since the open-door policy in 1978. Through analysis, China's textile and apparel industry still locates in the low value-added activities now. However, with the years gone by, the degree of vertical disintegration in China's textile and apparel industry in global value chain is gradually deeper. It will promote the efficiency in both overall China's textile and apparel industry and the different sub-sectors to insert the global value chain. While, vertical disintegration in the global value chain has different effects on different sub-sectors. Textile industry and fibre industry benefit from vertical disintegration more than apparel industry and leather industry. Finally, the paper puts up with some suggestions such as basing on comparative advantages, strengthening technological innovation, channel control and relying on the local market.