Perineal bladder pain may be caused by acute cystitis, bladder stones, prostatitis and other factors. 1. Acute cystitis: not paying attention to the hygiene of the lower body in daily life may induce acute cystitis. When the infection is more serious, it will cause irritation and damage to the bladder, which will lead to bladder as well as perineal pain, and may be accompanied by frequent urination and urgent urination and other symptoms. 2. Bladder stones: may be secondary to kidney stones, or may be caused by prolonged urinary holding, dietary factors, in the position change or urination, frequent movement of the stone, causing damage to the bladder, will lead to bladder and perineum pain, the pain may be more serious, accompanied by urination difficulties, urinary frequency, hematuria and other symptoms. 3. Prostatitis: It may be related to frequent drinking and smoking, excessive sexual life and other factors, which can cause bladder as well as perineal pain, accompanied by symptoms such as dribbling of urine, dysuria, frequent urination, urgency and so on. There may be other reasons for bladder and perineum pain, so it is recommended that you seek medical attention for appropriate examination and treatment to avoid delays in your condition.