PURPOSE: A manufacturing method of drying red sea cucumber is provided to keep the size of the protruding part of the red sea cucumber, the form and shape of the red sea cumber and the texture of the red sea cucumber.CONSTITUTION: Internal organs in the red sea cucumber are removed. The red sea cucumber without the organs comprises a cover mucus of which the pH is 6-8. The neutralized red sea cucumber is dipped into salty water. The dipped red sea cucumber is boiled. The boiled red sea cucumber is dried. A neutralization step of the red sea cucumber without the organs is dipped into potassium aluminum sulfate solution of which the pH is 3-5. The neutralization step of the red sea cucumber without the organs is dipped into vinegar of which the pH is 3-5. A drying method of the red sea cucumber is to include a preliminary step to allow the neutralized red sea cucumber to have 40-60% of moisture and another step of preserving the boiled red sea cucumber with salt.COPYRIGHT KIPO 2013본 발명은 홍해삼 건조방법에 관한 것으로서, 보다 상세하게는 홍해삼의 상품성을 높이기 위하여 돌기의 크기, 형태 및 살아있는 홍해삼의 본연의 모양 등을 잘 유지시킬 수 있도록 할 뿐만 아니라, 질감이 좋은 홍해삼을 제공할 수 있는 건조방법에 관한 것이다.