Due to its special geographical characteristics, Beichuan County has the best ecological resources advantage of konjac growth. The cultivation of Kitagawa flower konjac began in the Ming Dynasty and is a unique variety that has long been formed due to the special heterozygosity of konjac. Its fine powder extraction recovery rate is 55-60%, which greatly exceeds other similar varieties; the main quality index-viscosity reaches 20,000PPM-25000PPM (national standard is 18000 PPM-22000PPM); glucomannan content exceeds other varieties by 4-5 percentage points The solution transparency can reach 80%.