A safety opening cap according to the present invention is a cap for opening a can lid of a can including: a protruding rim which is formed protruding from an upper portion of the can in which food is stored; the can lid which is formed inside the protruding rim to cover the upper portion of the can; and the can loop of which one side is coupled to the can lid. The safety opening cap comprises: a cap body forming a body; an outer wall extending downward from the outer circumferential surface of the cap body; a can loop-raising part which is formed to protrude a predetermined thickness from the top surface of the cap body and has an inclined surface; and a can loop-passing means which is formed on the top surface of the cap body and has a space into which the can loop can be inserted when the cap body is pressed downward.