Hidden pain in the left lower abdominal testicle may be due to stones, testicular epididymitis, chronic prostatitis and other causes. 1. Stones: for example, stones in the lower and middle ureter can lead to more severe pain symptoms, and the pain can radiate to the testicles, groin, and lower abdominal area, which can lead to hidden pain in the left lower abdominal testicle. 2. Testicular epididymitis: such as urinary tract infection, prostatitis and other factors, can make the pathogenic bacteria through the vas deferens lumen, so as to enter the epididymis testis, resulting in bacterial testicular inflammation, and then appear the phenomenon of the left lower abdominal testicle hidden pain. 3. Chronic prostatitis: when suffering from chronic prostatitis, in addition to frequent urination, urinary urgency, urethral dribbling and other abnormal urination symptoms, can also lead to the scrotum, perineum, inguinal area, the lower abdomen this piece of the symptoms of radiating hidden pain. When there is a hidden pain in the left lower abdomen testicle, it is recommended to go to the hospital in time for examination to clarify the cause of the disease, which is conducive to targeted treatment.