The present invention relates to a method for producing coffee beans by processing coffee beans, and more particularly, to a method for producing coffee beans by washing coffee beans with a brine solution, drying and roasting the beans, removing harmful substances remaining in the coffee, The present invention relates to a method for producing coffee beans. The step of preparing the coffee beans according to the embodiment of the present invention comprises the steps of washing (s110) with 3.5 wt% of salt water, removing the silk (s120), rinsing (s131) with water having a temperature of 33 to 35 degrees Celsius, (S132), rinsing third time with water having a temperature of 60 to 70 degrees Celsius (s133), drying the rice so that the moisture content of the green bean is about 20% for 30 minutes to 1 hour A first roasting step (s150 to s160) in which the roaster is heated to 210 to 215 degrees Celsius and then roasted until the temperature of the green beans is increased to 150 to 155 degrees Celsius for 15 minutes, A first cooling step (s170) for cooling the car-roasted resultant to room temperature (s170), a gas discharge step (s180) for discharging the gas for 24 hours by placing the primary cooled result in a closed container with an aroma valve, The flask was heated from 200 to 205 degrees Celsius The roots were placed in a roaster and the roots were heated until the green bean temperature became 150 to 155 degrees Celsius during the first 10 minutes, and then roasting was continued until the temperature reached the predetermined temperature again. The roasting results (s190 to s200) (S210).본 발명은 커피 생두를 가공하여 커피원두를 만드는 방법에 관한 것으로서, 보다 자세하게는 소금물용액에 생두를 세척한 후 건조하여 로스팅함으로써 커피에 잔류하는 유해물질을 제거하고 위생적으로 가공함은 물론 커피의 풍미를 향상시킬 수 있는 커피원두 제조방법에 관한 것이다. 본 발명의 실시 예에 따른 커피원두의 제조단계는 3.5중량%의 소금물로 세척하는 단계(s110), 은피를 제거하는 단계(s120), 섭씨 33도 내지 35도의 물로 1차 헹굼하는 단계(s131), 섭씨 33도 내지 35도의 물로 2차 헹굼하는 단계(s132), 섭씨 60도 내지 70도의 물로 3차 헹굼하는 단계(s133), 30분 내지 1시간동안 생두의 수분함량이 20%내외가 되도록 건조하는 단계(s
