An embedded type motorized blind device. A power supply section has a motor. A power transmitting section has a worm gear coupled to the shaft of the power supply section, a worm wheel positioned on and meshed with the worm gear, a planetary gear formed on a side surface of the worm wheel, and a quadrangular shaft formed integrally with a front end of the worm gear. A control section has an internal sun gear meshed with the planetary gear, a pair of swing arms securely locked to a center shaft fastened to a bottom wall of the internal sun gear, and a pair of limit switches operated by lower ends of the swing arms to control raising and lowering of a blind. An operating section has raising and lowering drums connected one with another, and tilt adjustment parts respectively placed on the raising and lowering drums.