Frequent urination but no urinary pain may be caused by physiological factors, diabetes, uremia and other factors. 1. Physiological factors: drinking a lot of water every day, so that the production of urine increases, there will be frequent urination symptoms, accompanied by an increase in the amount of urination, is a normal physiological manifestations, control the amount of water after the number of urination can be returned to normal. 2. Diabetes: after suffering from diabetes mellitus, blood sugar can be increased, which will cause frequent urination symptoms, not accompanied by urinary urgency, accompanied by drinking, eating, weight loss, fatigue, blurred vision and other symptoms. 3. Uremia: when suffering from uremia, resulting in abnormal levels of antidiuretic hormone in the body, frequent drinking, frequent urination, which may be accompanied by extreme thirst, dry skin and other symptoms, which can lead to coma in severe cases. Frequent urination accompanied by other obvious abnormalities should be alerted to disease factors, and it is recommended to consult a doctor for examination and treatment.