The cotton bollworm continued to be the most serious pest of cotton and other crops in China. In 1996, it occurred at medium levels in most areas in North China (the Yellow River Valley Cotton Region), much lower than in 1992 and 1993. The cumulative number of eggs on 100 cotton plants (ca. 15-19 square meters) were 200-4,000, 50-400, and 500-3,000 during the 2nd, 3rd, and 4th overlapping with 5th generations, respectively. However, the population densities were very high in Xinjiang Autonomy in the Northwest Cotton Region and Jiangsu Province in the Yangtze River Valley Cotton Region. It is believed that the weather conditions affected greatly on the densities among the regions this year. Research progresses in the control strategy and tactics were made. The community-wide control strategy was extended in an even larger (about 2/3 of the total ) area resulted in sound control in North China. But in Xinjiang Autonomy, the farmers suffered a heavy loss by the pest. It is estimated that the national lint yield was 3.5-4.0 million tons for the season.