Konjac knots are made of konjac. Amorphophallus konjac is used as raw material, which is ground into pulp and then extracted to make konjac silk. Finally, the prepared konjac silk is knotted and cut into konjac knots. Amorphophallus likes warm and humid, the optimum temperature is 20 ~ 30℃, the optimum temperature is 25℃, and the optimum relative humidity is 80% ~ 90%, that is, Amorphophallus likes places with long optimum temperature period but not suitable for hot and dry summer.