A juice extractor includes a main body including a cutting device and a brake device received therein. The cutting device includes a motor with a driving shaft and a blade disc is connected to the driving shaft. The brake device includes an operation member movably connected to the main body, a spring connected to the main body, a brake frame pivotably connected to the main body, and a brake disc connected to a driving shaft. The operation member has a push member which contacts the brake frame and the spring. When the operation member is moved downward, the push member releases a force applied to the brake frame and the spring, so that the brake frame applies a force to the brake disc to brake the juice extractor. When the operation member is moved upward, the push member applies a force to the brake frame and the spring, so that the brake frame releases a force applied to the brake disc.
