Abstract: The content of water in 20 kinds of feeds were determined by using GB/T 6435-1986 determination method, GB/T 6435-2006 determination method and SH10A rapid determination method. Results showed that the three determination methods had no significant effect on the content of water, among them GB/T 6435-1986 determination method needed a long time, and SHIOA rapid determination method could be affected by external factors although it can detect water content fast. Based on comprehensive consideration, it is considered that GB/T 6435-2006 determination method is most suitable for the front line of oroduction.