The invention discloses an interlocking electromechanical tumbler-free anti-theft alarm lock. A connecting body of the lock is disconnected with a rear lock cylinder, the rear lock cylinder is locked by a locking head, an expanding end of an expanding sheet stretches into an extrusion groove to lock a front lock cylinder, the front lock cylinder and the rear lock cylinder are completely disconnected and carry out asynchronous rotary alarming, and an electronic remote control device is arranged in a power supply circuit of an electromagnet. Electromechanical interlocking, mechanical interlocking, hidden connecting of the front lock cylinder and the rear lock cylinder and asynchronous alarming are integrated, pushing and hanging type unlocking is adopted, a theft cannot open an interlocking device or rotate the rear lock cylinder, the theft can only rotate the front lock cylinder even though the interlocking and connecting part is damaged by a brutal means, and the rear lock cylinder does not rotate. Even though the theft drills the front lock cylinder and the rear lock cylinder off with an electric hand drill, and rotates a connecting tongue through a clamp or other tools, a rotary contact is in contact with a non-fixed contact and cannot be communicated with the power supply circuit of the electromagnet, in addition, the power supply circuit of the electromagnet is powered off through the electronic remote control device, a safety lock cross cannot be opened, and the complete and thorough anti-theft function is achieved.