Sudden cessation of smoking in hypertensive patients does not cause fluctuations in blood pressure; however, for patients who have been dependent on tobacco for a long time, sudden cessation of smoking may produce a series of undesirable manifestations, such as producing irritability, mental depression, coughing, coughing up phlegm or weight gain. 1. Restlessness, mental depression: due to the sudden withdrawal of nicotine, most patients will experience insomnia, anxiety, difficulty concentrating, restlessness, mental depression and other manifestations. 2. Coughing, coughing up phlegm: mainly because long-term smoking inhibits the patient’s airway response, the airway response increases after sudden cessation of smoking, resulting in symptoms of coughing. 3. Weight gain: mainly due to increased appetite or decreased basal metabolic rate after quitting smoking. Although quitting smoking will produce some adverse reactions, in the long run, the benefits of quitting smoking outweigh the disadvantages. If you have any discomfort after quitting smoking, please go to a regular hospital in time and consult a physician for guidance.