The statement “which is better, Bacillus licheniformis or a probiotic” is inappropriate, as Bacillus licheniformis itself is a probiotic, and the specific effects of its use vary from person to person. Bacillus licheniformis is a type of intestinal probiotic, so there is a misunderstanding of which is better, Bacillus licheniformis or probiotics. However, in addition to Bacillus licheniformis, Bifidobacterium, Lactobacillus, Clostridium casei, etc. are also commonly used intestinal probiotics, which can be used to regulate intestinal flora. The effects of the above probiotics are affected by a variety of factors such as individual physical condition, medication compliance, severity of the disease, other treatment measures, etc. Individual differences in efficacy may exist, and it is impossible to say which probiotics are most effective. It should also be noted that the contraindications and adverse effects of Bacillus licheniformis and other probiotic preparations are unclear. Therefore, those who have the need for probiotics must take the medication under the guidance of a doctor, and must not take the medication blindly or increase or decrease the dosage by themselves, in order to avoid adverse consequences.