The invention discloses a portable first-aid kit for treating drug allergies. The portable first-aid kit for treating drug allergies is technically characterized in that an injector storage drawer is arranged on the lower portion of a cuboid box body in the horizontal direction, a first compression spring is arranged between the rear end of the injector storage drawer and the inner wall of the cuboid box body, and a first elastic plug pin device is matched with a first locking groove formed in the injector storage drawer to lock the injector storage drawer; a large drawer is arranged on the upper portion of the cuboid box body in the vertical direction, a second compression spring is arranged between the lower end of the large drawer and an inner partition board of the cuboid box body, and a second elastic plug pin device is matched with a second locking groove formed in the large drawer to lock the large drawer; the interior of the large drawer is divided into an antiallergic drug storage chamber, a bottle opener storage chamber, a medical proof fabric storage chamber and a sterilized cotton ball storage chamber; and an elastic arm fixing band is arranged on the cuboid box body. By integrating antiallergic drugs with articles, treatment is facilitated, operation efficiency is improved, uniform configuration and fixed-position placement are facilitated, and normalization can be achieved.