Hypromellose acid fast capsule is a kind of plant capsule that is insoluble in the stomach but soluble in the intestines. We developed it according to the different PH values of the stomach and intestines to control the content of the capsule not to release in the stomach, but to target the release in the intestines, which not only protects the drug from being damaged by gastric acid, improves the utilization rate of drug properties, but also avoids the stimulation of drugs to the stomach, and protects digestive organs and respiratory tract. Especially suitable for filling drugs that are easily irritating to the stomach or susceptible to gastric acid damage or enzyme breakdown in the stomach, as well as those that require targeted release in the intestine, such as probiotic capsules, which have a higher survival rate in plant capsules and target release in the intestine; Animal Rongmingchang Capsule (Omeprazole enteric coated capsule).