Sorghum is the main raw material for Chinese liquor brewing, and the brewing Strong or Sauce-flavor liquor has more special requirements for the original cooking properties. In order to shorten the time and reduce the human error effectively during the operation of amylopectin detection, a rapid detection method was established for the detection of amylopectin content in this experiment, the performance evaluation of the method and instrument was carried out, and the rapid detection method was compared with the national standard method, the results showed that there was no significant difference between the two methods.