The tadpoles can’t find the right direction, which is really a distressing thing for men. It’s a very good idea to have a good time with your lover, but you just can’t ejaculate, and you can’t reach that crucial moment. The longer the intercourse, the better. In this case, it is likely to be non-ejaculation, so men must do the following tests. 1. Basic examination: (1) Genital examination: Men should first undergo an examination that includes the contents of the penis and scrotum as well as the secondary sexual characteristics to understand whether the body and sexual development are normal and whether there are congenital anatomical abnormalities that hinder sexual life. (2) Whole body physical examination: Systemic diseases affecting sexual function can be detected through whole body examination. For example, diseases can be detected from skin signs, such as spider nevus in liver disease and hyperpigmentation in Addison’s disease. From eye signs reveal certain diseases, such as proptosis of hyperthyroidism, auropil of neurosyphilis, retinopathy of diabetic nature, etc. 2. Laboratory tests: Diabetic patients have a 50% probability of suffering from non-ejaculation, so blood glucose and glucose tolerance measurements should be included in routine tests. Serum testosterone (T), follicle stimulating hormone (FSH), luteinizing hormone (LH), and prolactin (PRL) measurements can reveal hypothalamic-pituitary-gonadal axis dysfunction. If the medical history suggests thyroid or adrenal disease, abnormal lipid metabolism, or liver or kidney dysfunction, the corresponding biochemical tests should be performed. 3.Imaging: (1) Color dual-function ultrasonography of the penis: it can confirm the location of penile arteries and real-time images of the penile corpus cavernosum, urethral corpus cavernosum, and white membranes, and quickly probe and measure small vessels in the low perfusion state. Combined with intracavernosal injection of vasoactive drugs, observation of blood flow in the penile corpus cavernosum before and after injection is helpful to understand both the blood supply of penile arteries and the mechanism of venous closure. (2) Penile corpus cavernosum imaging: the patient is lying flat on his back, an elastic tourniquet is placed at the root of the penis, a needle with a pressure transducer is stabbed into the middle of the cavernous body on one side, 30-60 mg of poppies are injected, the pressure band is removed after 2-3 minutes, and the cavernous pressure rises within 5-15 minutes. In normal male penis, before full erection, more than 90% of the penis has different degrees of shadow veins, but after erection, there are no obvious shadow veins on the imaging radiograph. (3) Penile arteriography: For cases with atherosclerosis, hypertension, hyperlipidemia and diabetes mellitus, as well as pelvic fractures, penile trauma and other high-risk factors, penile arteriography is indicated. The catheter is inserted from the femoral artery on one side, crossed over the aortic bifurcation to the contralateral internal iliac artery, and 60-80 ml of contrast is injected rapidly, while a lateral view of the penis is taken in an oblique pelvic position. The catheter is then withdrawn to the ipsilateral internal iliac artery, and the film is taken again. (4) Radionuclide imaging: radioactive drug is injected intravenously, and the flow of the imaging agent is monitored with a γ camera within the specified time. Under the action of vasoactive drugs, the normal male penile imaging agent increased significantly, and the retention time of blood in the penis was prolonged. If there is no significant change in the flow of the imaging agent then it indicates vascular erectile dysfunction of the penis. (5) Vas deferens and seminal vesicle imaging: to check for congenital malformations, ejaculatory duct obstruction or tuberculous inflammatory reaction. (6) Cystourethrography during voiding: to rule out sphincter spasm, urethral stricture, and bladder neck widening. (4) Psychological assessment: To clarify whether the patient’s complaints are correct and objective, whether it is a normal physiological phenomenon or whether the patient is subjectively suspicious or indeed pathological. Whether the ejaculation is primary or secondary, whether it is sudden (mostly psychogenic) or gradually developing (mostly organic). Understand the duration of the existence of ejaculation, the treatment process, confidence in the cure and the attitude of the spouse. 5. Other examinations: transrectal ultrasound, cystoscopy and CT examination are feasible if necessary. I thought I was strong, but I didn’t think I was suffering from a disease, so all men must correctly understand “ejaculation”, not the longer the better, and once the problem arises, do not ignore it, timely examination and medical treatment in order to better put into the love of two lovers. References: [1] Meng Xianghu, Fan Longchang, et al. The diagnosis and treatment of ejaculation [M]. Chinese Journal of Male Science. 2010,24(12):56-58