Abstract: An emergency door lock system and method is provided for securing a door during an emergency situation. The emergency door lock system or barricade includes a portable removable lock pin, an interior door bracket, an exterior door bracket, and a set of u-shaped clamp brackets. The clamp brackets provide support to the interior bracket and the exterior bracket and a set of threaded screws through the clamp brackets provide pressure to the lock system to securely attach it to a door. The removable lock pin enters through a pin slot in the interior bracket and then engages into a remote pin slot in a floor or a wall. The lock pin engages the interior bracket and the remote pin slot to provide a secure robust lock or barricade with the door. The emergency door lock system is dissassembleable for removal for emergency access. An optional alarm system may be included.