Smoking is not recommended after dental implant surgery. Dental implant surgery involves removing the mucous membrane under local anesthesia and placing the implant into the bone. After the implant forms an osseointegration, a crown is fabricated on the outside. After implant surgery, there will be wounds in the mouth. The sucking action of smoking tends to cause the wound to bleed and increase the rate of reinfection of the wound after implantation. Smoking decreases oxygen and increases carbon dioxide in the mouth. At the same time, the tar and nicotine in cigarettes can irritate the wound, affecting wound healing and increasing the risk of implant failure. Smoking also affects the local blood microcirculation, which affects the bonding of the implant to the bone and can easily lead to implant dislodgement. Therefore, smoking is not recommended after dental implant surgery. Patients are advised to strictly follow the doctor’s instructions, go to the hospital for regular dental checkups, and seek immediate medical attention if any discomfort occurs.