A guide rail type flip-up mechanism includes a base unit including a first connection member affixed to a main unit of a flip electronic product and a guide rod and a first pivot axle disposed at one same side relative to the first connection member, a linkage unit including a pivoting member with one end thereof pivotally connected to the first pivot axle and an opposite end thereof providing a second pivot axle and a displacement member with a third pivot axle coupled to the guide rod and movable back and forth along the guide rod, and a flip member including a second connection member affixed to the display of the flip electronic product and a first axle barrel and a second axle barrel located at one lateral side of the second connection member and respectively coupled to the second pivot axle and third pivot axle of the linkage unit.