1, different parts: sirloin steak is taken from the tender beef on the back of cattle, sirloin steak mainly refers to the tenderloin of cattle, and filet mignon mainly refers to the tenderloin of cattle at the waist, which appears in irregular rows.

2, the taste is different: sirloin steak, authentic sirloin steak, contains a certain amount of fatty oil, especially with a circle of white meat tendons, which is more tough and chewy. Sirloin steak is delicious and contains a certain amount of gluten. It needs to be broken before cooking and tastes chewy. Because of its strong flavor, you can't overcook it, or people with bad teeth will.