An apparatus for manufacturing hydrogen-containing peritoneal dialysate, the apparatus comprising: a dialysate bag housing dialysate to be injected into a peritoneal cavity of a patient; and a hydrogen dissolution device interposed between the dialysate bag and the patient and configured to dissolve hydrogen in the dialysate, the hydrogen dissolution device including: a fluid rate measuring device connected to the dialysate bag and configured to measure a flow rate of the dialysate supplied from the dialysate bag to the patient; a hydrogen supply amount determining device connected to the fluid rate measuring device and configured to determine an amount of hydrogen supply to the dialysate; a storage connected to the hydrogen supply amount determining device and configured to store data on a target value of the hydrogen supply amount corresponding to the fluid rate of the dialysate; and a hydrogen supply device connected to the hydrogen supply amount determining device and configured to supply hydrogen to the dialysate, wherein the hydrogen supply amount determining device is configured to determine the amount of hydrogen supply in accordance with a value of the fluid rate of the dialysate measured by the fluid rate measuring device and the target value of the amount of hydrogen supply corresponding to the fluid rate of the dialysate, the target value being stored in the storage, the hydrogen supply device is configured to supply the hydrogen to the dialysate in accordance with the amount of hydrogen supply determined by the hydrogen supply amount determining device, the fluid rate measuring device includes a weight measuring device connected to the dialysate bag and a fluid rate calculator connected to the weight measuring device, the weight measuring device is configured to measure a weight of the dialysate bag housing the dialysate in real time, the fluid rate calculator is configured to calculate the fluid rate of the dialysate supplied from the dialysate bag to the patient in accordance with change in the weight of the dialysate bag measured by the weight measuring device, and the hydrogen supply amount determining device is configured to determine the hydrogen supply amount in accordance with the value of the fluid rate of the dialysate calculated by the fluid rate calculator and the target value of the amount of hydrogen supply corresponding to the fluid rate of the dialysate, the target value being stored in the storage. a dialysate bag housing dialysate to be injected into a peritoneal cavity of a patient; and a hydrogen dissolution device interposed between the dialysate bag and the patient and configured to dissolve hydrogen in the dialysate, the hydrogen dissolution device including: a fluid rate measuring device connected to the dialysate bag and configured to measure a flow rate of the dialysate supplied from the dialysate bag to the patient; a hydrogen supply amount determining device connected to the fluid rate measuring device and configured to determine an amount of hydrogen supply to the dialysate; a storage connected to the hydrogen supply amount determining device and configured to store data on a target value of the hydrogen supply amount corresponding to the fluid rate of the dialysate; and a hydrogen supply device connected to the hydrogen supply amount determining device and configured to supply hydrogen to the dialysate, wherein a fluid rate measuring device connected to the dialysate bag and configured to measure a flow rate of the dialysate supplied from the dialysate bag to the patient; a hydrogen supply amount determining device connected to the fluid rate measuring device and configured to determine an amount of hydrogen supply to the dialysate; a storage connected to the hydrogen supply amount determining device and configured to store data on a target value of the hydrogen supply amount corresponding to the fluid rate of the dialysate; and a hydrogen supply device connected to the hydrogen supply amount determining device and configured to supply hydrogen to the dialysate, wherein the hydrogen supply amount determining device is configured to determine the amount of hydrogen supply in accordance with a value of the fluid rate of the dialysate measured by the fluid rate measuring device and the target value of the amount of hydrogen supply corresponding to the fluid rate of the dialysate, the target value being stored in the storage, the hydrogen supply device is configured to supply the hydrogen to the dialysate in accordance with the amount of hydrogen supply determined by the hydrogen supply amount determining device, the fluid rate measuring device includes a weight measuring device connected to the dialysate bag and a fluid rate calculator connected to the weight measuring device, the weight measuring device is configured to measure a weight of the dialysate bag housing the dialysate in real time, the fluid rate calculator is configured to calculate the fluid rate of the dialysate supplied from the dialysate bag to the patient in accordance with change in the weight of the dialysate bag measured by the weight measuring device, and the hydrogen supply amount determining device is configured to determine the hydrogen supply amount in accordance with the value of the fluid rate of the dialysate calculated by the fluid rate calculator and the target value of the amount of hydrogen supply corresponding to the fluid rate of the dialysate, the target value being stored in the storage.