The maximum number of days that diclofenac sodium can be used is not limited, and its dosage should be adjusted accordingly with different individuals, but the minimum effective amount should be given to control the symptoms in as short a time as possible. Diclofenac sodium is an anti-inflammatory and analgesic drug used for the relief of rheumatoid arthritis, osteoarthritis, all kinds of soft tissue rheumatic pain, acute mild and severe pain. Diclofenac sodium does not provide a specific course of use, so there is no uniform answer to the maximum number of days diclofenac sodium can be used. The dosage should be adjusted according to the different diseases, the patient’s own condition, and the response to the drug, so that the smallest effective amount can be given for as short a time as possible to control the symptoms. The common adverse reactions of diclofenac sodium include dizziness, headache, nausea, vomiting, etc. It is prohibited for those who are allergic to diclofenac sodium, those with liver or kidney failure, and those with severe heart failure. It is recommended that patients who need to use diclofenac sodium need to consult a professional doctor, do not use it privately.