1, classification is different: swordfish belongs to the swordfish family, while swordfish belongs to the swordfish family.

2. Different shapes: the snout of swordfish is long, flat and sword-shaped, the cross section of the upper jaw is flat, the edge is sharp, the body surface is smooth and scaleless, and the dorsal fin is small, similar to shark fin; Sailfish's snout is short, conical or sword-shaped, with a round cross-section of the upper jaw, blunt edge, comb-shaped body surface and high dorsal fin, which is similar to a sail.

3. Different body shape and weight: swordfish generally has a body length of 3-5 meters and a weight of 650 kg; Swordfish generally have a body length of1~ 3m and a weight of10 ~ 90kg.

4. Different feeding habits: swordfish and swordfish are carnivorous fish, swordfish feed on fish, crustaceans and cephalopods, and swordfish mainly feed on fish.