The present invention relates to a mask for blocking fine dust using an air curtain, the mask for blocking fine dust using an air curtain according to the present invention includes a mask part surrounding a part of the face including a respiratory tract; A body part supplying outside air to the mask part; And a sending unit for transferring the outside air from the main body to the mask unit, wherein the mask unit supplies a purified supply line for supplying the transferred outside air to the respirator; An air curtain composition line that discharges the outside air to the outside of the mask to form an air curtain; And an external air flow control member for controlling the flow rate of the external air transferred to the purification supply line or the air curtain composition line.
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