Abstract: Analysis were made on quantitative distribution and migration rhythm of Anas platyrhynchos in Zhejiang province by monitoring data from 2009-2014 of 56 monitoring stations. The results showed that A. platyrhynchos overwintered around station of Lin'an, Sanmen, Yalinsuo with migration times from October 8th to next June 23rd in Zhejiang province. It moved from south to north during March 27 and May 22 and from north to south during October 8 to November 18. Forecasting model for quantitative variation of A. platyrhynchos in Zhejaing province was established by data mining.