Urethral injury is a common injury to the urinary system, occurring mostly in men and mostly in young adults, especially in the more fixed bulb or membrane. Urethral injury is one of the main causes of urinary extravasation, and most patients with urinary extravasation are secondary to injury to the urethra. Dietary principles for patients: Dietary suitability: 1. foods rich in vitamins are desirable; 2. foods rich in high quality protein are desirable; 3. fruits rich in water. Appropriate food 1, lemon lemon has a detoxification, antibacterial, anti-inflammatory effect on patients with urethral injury has the role of prevention of infection. It is appropriate to drink 350-500 ml of water every day. 2, milk Milk is rich in high-quality protein, as well as a variety of trace elements, on the wound healing of urethral injury is helpful. 350-500 ml per day is appropriate. 3, watermelon Watermelon has the role of detoxification, diuretic, hydration, so that patients urinate diligently to avoid bacteria stay in the urethra and prevent the role of infection. 300-600 grams per day is appropriate. Dietary contraindications: 1, avoid eating spicy and stimulating food; 2, avoid eating greasy food; 3, avoid eating acidic food. Avoid eating food 1, chili pepper Chili pepper is easy to stimulate the neurovascular, resulting in congestion of the urethral mucosa, which can easily lead to bleeding at the site of injury, as well as inhibit the prognosis of the wound. Appropriate to eat light food. 2, fatty meat fatty meat contains a lot of fat, easy to nourish bacteria, easy to cause urethral injury patients caused by urethritis. It is advisable to eat light food. 3, cheese cheese belongs to the acidic food, easy to lead to lower urine PH value, easy to nourish the role of bacteria, is not conducive to the body’s recovery. It is appropriate to eat alkaline food. 4, seafood and beer Many people like to eat seafood while drinking beer, this way has been called by nephrologists “the most damaging way to eat kidneys”. Eating a lot of seafood will produce too much uric acid and urea nitrogen and other metabolic wastes, increasing the burden of kidney excretion, causing damage to the kidney parenchyma. And a lot of drinking alcohol can easily lead to hyperuricemia, these habits can also cause hyperlipidemia and other metabolic diseases, leading to kidney disease. If seafood, beer with food, but also trigger gout. 5, after drinking strong tea tea in the theophylline can quickly play a diuretic effect on the kidneys, thus promoting the premature entry of acetaldehyde into the kidneys has not been decomposed. Acetaldehyde is a harmful substance to the kidneys have greater irritation. And the kidneys do not have this detoxification function, so it will affect kidney function, often drink strong tea after drinking people prone to kidney disease.