The ineffectiveness of the delaying spray may be related to improper use methods, medications that are not right for the right reasons. Premature ejaculation is a common disease in men, and it is now believed that the causes of premature ejaculation are not only psychological and localized penile factors, but also urological, endocrine and neurological system disease factors should be considered. The use of time-delay sprays cannot treat or alleviate all the causes of premature ejaculation, thus prolonging ejaculation time has limited efficacy. In addition, most delaying sprays should be used in moderation half an hour before sex, after erection or in excessive amounts, which may lead to unsatisfactory results. Therefore, before using the delay spray, you should check the cause of premature ejaculation in a regular hospital, treat it symptomatically and use it under the guidance of a specialist, and use it in strict accordance with the instructions.