The matters that should be paid attention to after heart valve replacement include reasonable diet, taking medication on time, regular medication change and checkup, and moderate exercise. 1. Reasonable diet: After heart valve replacement surgery, one should have a reasonable diet, low salt, high quality protein and diversified diet, so as not to aggravate the burden on the heart. 2. Take medication on time: After heart valve replacement, you should take anticoagulant and antiplatelet drugs, such as warfarin and clopidogrel, etc. You need to check the index of prothrombin (INR) regularly and adjust the dosage in time. 3. Regular medication change and review: the skin of the incision after heart valve replacement should be changed regularly to keep the dressing dry and wear a chest strap to keep the stability of the chest. 4. Moderate exercise: After heart valve replacement surgery, you should do some exercise to strengthen your body, and the amount of exercise should be based on the fact that you will not be tired after the exercise. Therefore, patients after heart valve replacement should have regular checkups and follow the doctor’s instructions to avoid delaying the condition and affecting the prognosis.