The methods to reduce the sensitivity of the glans are psychological behavioral therapy, topical therapeutic drugs, oral therapeutic drugs. 1. Psychological behavior therapy: (1) more communication with sexual partners, relieve tension and anxiety. (2) Coronary groove squeezing method, when there is a sense of ejaculation, use fingers to pinch the penis at the coronary groove, can improve the ejaculation threshold, reduce the sensitivity of the coronary groove. 2. external treatment drugs: you can apply lidocaine gel in the coronal groove of the penis, which can effectively reduce the sensitivity. 3. Oral treatment drugs: you can take sertraline, dapoxetine, etc., can inhibit neuron 5-hydroxytryptamine reuptake, play the role of reducing sensitivity to delay ejaculation. These drugs have different degrees of adverse reactions, such as local numbness, dizziness, drowsiness, etc., in the use of these medications, be sure to follow strictly in accordance with medical advice under the guidance of a doctor.