The following three diseases are common in male patients with small abdominal cramps: First, they are commonly associated with urological diseases, mainly including lower ureteral stones, or acute or chronic prostatitis, which usually require further urological ultrasound examination for a clear diagnosis. For relatively small urinary stones, medication is used to shoot the stones, and for larger urinary stones, further lithotripsy and, if necessary, surgical stone extraction treatment is required. And for acute and chronic prostatitis, antibiotic treatment is usually used; secondly, it is common for anorectal diseases, perianal infections, and in severe cases, perianal abscesses. The appearance of perianal abscess, need to perform ultrasound or CT examination, after the diagnosis is clear, need to surgical incision and drainage treatment; third, common in acute purulent appendicitis, pus flows into the pelvic cavity, stimulating the lower abdomen rectal anal canal, causing pain and discomfort, need to further perform appendix ultrasound examination, combined with routine blood tests, after the diagnosis is clear, need to emergency surgery treatment.