The presence of minor oral calculus is a normal phenomenon, it is recommended that patients go to a professional hospital every six months to a year, oral ultrasonic supragingival scaling to remove intraoral calculus, the presence of calculus may lead to bacterial growth, stimulation of the gums leading to gingivitis, and even more serious may lead to loss of attachment to periodontitis. A more severe periodontitis may lead to resorption of the patient’s alveolar bone, redness and swelling of the gums, and loosening of the teeth. Do not ignore the case of slight dental calculus, it is recommended that patients go to the hospital in time to clean the teeth to remove the calculus in the oral cavity, maintain good oral hygiene in daily life, careful brushing, rinsing after meals, and regular dental cleaning in the hospital.