The invention provides a prying-preventing alarm lock for a roller shutter door of a bank. The prying-preventing alarm lock comprises an alarm lock body, the alarm lock body is arranged on the bottom of the roller shutter door, the roller shutter door is arranged inside a door frame, and lock holes are formed in the bottom of the door frame; a first spring bolt is arranged at one end of the alarm lock body and is connected to a first linkage rod through a first ground contact, and a spring is arranged on the top of the first ground contact; and a second spring bolt is arranged at the other end of the alarm lock body and is connected to a second linkage rod through a second ground contact, a spring is arranged on the top of the second ground contact, a connector is arranged on the bottom of the second ground contact, an electrifying device is arranged on the bottom of the second linkage rod, and an alarm device is arranged on the top of the second linkage rod, comprises a battery and a horn and is electrically connected to the electrifying device. The prying-preventing alarm lock for the roller shutter door of the bank is reasonable in design, high in safety and suitable for being widely popularized in the financial industry.