Sprouting reduces the economic value of TNG73 sweet potatoes. Based on experimental results, TNG73 sprouted after 2 weeks of storage at room temperature. If sweet potatoes were treated with 70°C of hot water for 30 seconds after harvesting, TNG73 did not sprout until 4 weeks of storage. The hot water treatment successfully extended 2 weeks of storage life. Although the spoilage rate increased, it can be reduced by improving the harvest method. The hot water treatment method had no effect on the total sugar content of sweet potatoes, but it reduced 10% of anthocyanins content. The hot water treatment method successfully extended the storage life of TNG73 sweet potatoes. Results of this study can be used by sweet potato related manufacturers as references.