A bike having an automatic landing wheel apparatus includes a left landing wheel arm on the left side of the bike to vertically move a left landing wheel rotatably coupled to the lower end portion thereof. A right landing wheel arm on the right side of the bike vertically moves a right landing wheel rotatably coupled to the lower end portion thereof. A left driving unit drives the left landing wheel arm to move the left landing wheel upward and downward. A right driving unit drives the right landing wheel arm to move the right landing wheel upward and downward. A speed detection unit detects the speed of the bike. A controller is connected with the speed detection unit, the left driving unit, and the right driving unit to move the left and right landing wheels upward or downward in response to the detected speed of the bike.