PURPOSE: A desiccating apparatus and a desiccating method thereof are provided to dehydrate the liquid included inside leaf vegetables/foot vegetables as much as they can. CONSTITUTION: A main body(111) is formed in a lump. A pump(121) rotates water which is in a lump, a molecular press dehydrating agent and leaf vegetables/root vegetables. Several ultrasonic vibrator(135) stirs by vibrating water which is in a lump and a molecular press dehydrating agent. An ultrasonic wave oscillator(131) operates ultrasonic vibrators. A pump is connected to a water pipe(123). A valve(125) is installed in the water pipe. A pump is connected to the outside water pipe such as a water pipe which supplies water from outside to the pump. Prepare small pieces of leaf vegetables/root vegetables, and a mixture of water and molecular press dehydrating agent. Mix the sliced leaf vegetables/root vegetables and the mixture of water and molecular press dehydrating agent at a ratio of 1:1.2:1.6 and 1:0.75-0.5:1. Dehydrate the liquid of leaf vegetables/root vegetables by rotating mixed leaf vegetables/root vegetables, water and dextrin at a constant time interval. A molecular press dehydrating agent uses dextrin. Root vegetables cut into a thickness of 3-8mm. Use water which is cold water of Celsius 4. Leaf vegetables/ root vegetables are dehydrated in a lump for 12 hours.본 발명은 엽채류/근채류 속에 포함된 액을 최대한으로 탈수시키는 탈수 장치 및 그 탈수 방법을 제공하기 위한 것이다. 이를 위해, 본 발명은, 엽채류/근채류를 탈수시키기 위한 탈수 장치에 있어서, 통으로 형성된 본체; 상기 본체의 일측에 설치되어 상기 통에 담긴 물과 분자압축 탈수제 및 엽채류/근채류를 회전시키는 펌프; 상기 본체의 하부에 설치되어 상기 본체에 담긴 물과 분자압축 탈수제를 진동시켜서 교반하는 복수개의 초음파 진동기들; 및 상기 복수개의 초음파 진동기들에 연결되어 상기 초음파 진동기들을 동작시키기 위하여 상기 본체의 일측에 설치된 초음파 발진기를 구비하는 엽채류/근채류의 탈수 장치를 제공한다.