① There is no ejaculation activity, and there is still no ejaculation after a long time or even some form of orgasm failure;

② Retrograde ejaculation, after ejaculation urine routine examination can find sperm in urine;

(3) No semen is discharged, but no semen is discharged during orgasm. Most (over 90%) aneuploidies are functional, including:

(1) Central ejaculation disorder. Mainly due to abnormal brain function, sexual excitement inhibition is strengthened, especially ejaculation center inhibition, patients have no orgasm and ejaculation. There are also a few cases that do not ejaculate because of sensory organs, emotions and mental disorders.

(2) Central ejaculation disorder of spinal cord. The dysfunction or failure of the ejaculation center and erection center of lumbosacral spinal cord will lead to weakened penis erection or even no erection at all, slow ejaculation or even no ejaculation at all.

(3) Psychogenic ejaculation disorder. This type of ejaculation disorder, neither organic disease of reproductive system, is purely caused by psychological factors.

According to your description, your boyfriend is likely to suffer from reproductive diseases, most likely prostate diseases. It is better to take him to the hospital for examination, otherwise it may make the problem worse.