Difficulty in erection and lack of libido can be caused by frequent sexual intercourse, prostatitis or psychological factors. 1. Too much sex: When men have sex too often in their daily lives, it may cause stimulation to the penis, which in the long run can lead to erectile difficulties and lack of libido, and in severe cases, impotence. 2. Prostatitis: prostatitis can be induced when the prostate area is stimulated by physical or chemical factors, and after being repeatedly affected by inflammation, it can also affect the libido and make the patient have difficulty in erection, as well as inducing urinary pain and frequent urination. 3. Psychological factors: the impact of anxiety and depression or mental stress and other psychological factors, can also appear libido indifference and erectile dysfunction and other manifestations. Difficulty in erection and lack of libido can also be caused by other reasons, such as ureteral stones, urethral stenosis, etc., should go to the hospital in time to clarify the cause of the disease, and choose the appropriate method of treatment.