The normal value of glans sensitivity threshold ranges from 6.5 to 8.0. The sensitivity threshold of the glans area can be examined by the Penile Sensitive Nerve Examiner, and the sensitivity is judged according to the data obtained. Data below 6.5 suggests excessive sensitivity and susceptibility to premature ejaculation symptoms. If it is greater than 8, the glans is hypersensitive and prone to delayed ejaculation or no ejaculation. Through these precise tests can accurately determine the glans sensitivity. The main test glans sensitivity nerve detection, by the meter using micro-vibration stimulation probe, through the penis glans and other parts of the biological vibration sensory threshold measurement, quantitative evaluation of the penis and other parts of the sensory nerve sensitivity. More factors affecting the sensitivity threshold changes, but also need to go to the hospital combined with prostate fluid tests, sex hormone tests and other related projects to check, to produce accurate results.