Delay sprays are mainly local topical anesthetics, including lidocaine, dacronine, proparacaine and so on. Such delay sprays have a local anesthetic effect and are used on the glans and the coronal region one hour before sex, which has a certain improvement effect on premature ejaculation. Lidocaine, dacronine, proparacaine and other time-delay sprays are mainly used to achieve delayed effect by anesthetizing neuron cells, so that neurotransmitters can’t stimulate nerve synapses. The use can produce anesthetic effect on the glans and penile skin, which can reduce the sensitivity of the penis and prolong the time of sexual life. It is recommended that the drug be used under the guidance of a doctor, and those with broken skin or allergies to the ingredients in it should avoid using it, and if itching, burning sensation, rash or numbness occurs after use, the use should be suspended.