There are usually no top ten contraindications to horsetail in life, but patients with a cold spleen and stomach, chronic spleen deficiency diarrhea, and pregnant women should minimize consumption. In addition, the horsetail is also not suitable for taking with the role of warming Chinese medicine. 1, spleen and stomach cold: horsetail is cold, too much consumption will aggravate the body cold, and even damage the spleen and stomach. And the spleen and stomach cold patients then eat horsetail, easily lead to cold symptoms aggravated; 2, chronic spleen deficiency diarrhea: horsetail has the role of slippery intestines, if chronic spleen deficiency diarrhea patients eat horsetail, easy to stimulate the gastrointestinal tract, will lead to more serious diarrhea symptoms; 3, pregnant women: horsetail has a slippery effect, the smooth muscle of the uterus has an excitatory effect, can cause uterine contractions, so pregnant women should not eat too much to prevent The phenomenon of miscarriage; 4, part of the Chinese medicine: horsetail cold, if taken with a warming effect of Chinese medicine, such as turtle shell, pepper, etc., may lead to a decrease in the effectiveness of the medicine, affecting the recovery of the patient’s condition. If you eat horsetail to clear heat, you should avoid spicy, oily food, so as not to affect the cold properties of horsetail, to avoid aggravating the disease.