It is not recommended to take Zhi Ling capsule during cold and flu. From the perspective of traditional Chinese medicine, a cold is recognized as a feeling of external evil, resulting in the lung qi XuanDaShuDi malfunction, the treatment should be the main treatment to dispel the evil as the relief of the surface. The capsule has the effect of tonifying the lungs and kidneys, which belongs to the tonic medicine. Taking the capsule during the period of cold and flu may be due to its tonic nature, instead of closing the door to keep the enemy (the pores of the skin are closed so that the evil qi stays in the body and can’t come out), which hinders the dispersal of the external evils, and slows down the recovery of the condition. The ingredient of Zhiling capsule is Cordyceps sinensis, which has the function of tonifying the lung and benefiting the kidney. Used for lung and kidney deficiency caused by coughing, swelling and other diseases, can also be used for various types of kidney disease, chronic bronchitis asthma, chronic hepatitis and tumor adjuvant therapy. Its adverse reactions, contraindications and precautions are not clear. Discomfort should be timely consultation, drug consumption is recommended to consult a professional physician, follow the doctor’s instructions for medication.