Probiotics are not strictly contraindicated. Probiotics are mainly used to regulate the balance of intestinal flora, which are live bacteria beneficial to human health. Probiotics are active microorganisms that maintain the balance between beneficial and harmful bacteria in the digestive tract. Clinically, pharmaceutical preparations of probiotics such as Lactobacillus spp. and Bifidobacterium spp. are commonly used to regulate the balance of intestinal flora. Probiotics are also added to some food products, such as nutritional powder, protein powder, yogurt and other products. Both probiotic preparations and food additions are relatively safe. Probiotics are not particularly strict contraindications for the population, but some special groups of people taking probiotics need special attention, such as taking antibiotics, long-term use of gastric mucosal protection agents and other people taking drugs and probiotics need to be spaced out, to avoid adverse reactions occurring at the same time. The use of probiotics should pay attention to the water temperature should not exceed 40 degrees, to avoid high water temperature affects the activity of probiotics.