Hemodialysis is an important modality of renal replacement therapy. Hemodialysis actually has many dialysis modes, from simple hemodialysis, hemofiltration, and hemodialysis filtration, etc. Depending on the dialysis modality and the choice of different materials, the cost of treatment is different. For simple hemodialysis, the price per session is generally in the range of$400-600. Patients with uremia enter maintenance hemodialysis, which is usually performed on an outpatient basis, and each dialysis session is generally four to four and a half hours, three times a week. It is important to limit water, salt and high potassium foods under the guidance of the doctor at each dialysis session. If this is not followed and some complications arise from excessive weight gain and dehydration in a single session, medication will be required to manage the situation and the cost of the single session will increase. If it is because there is no water restriction, dialysis that could have been performed and maintained three times a week. As a result, because of complications such as acute left heart failure, an urgent increase in dialysis is required, which again increases the cost. Therefore, patients who are on maintenance hemodialysis should strictly follow the doctor’s instructions for every word they say and do, drink and eat, etc.