Fans are not suitable for people with constipation. Vermicelli itself is cold food. It is more suitable for people with fever. Some people with constipation belong to yang deficiency, qi deficiency or phlegm-dampness constitution. People with yang deficiency combined with qi and blood deficiency or phlegm-dampness constitution are afraid of cold and indigestion, and can't eat cold food. Constipation is not a specific disease, but a symptom of many diseases. Constipation patients usually had better not eat vermicelli.