The invention discloses a fire warning device suitable for a parking space, and belongs to the technical field of fire warning. Existing alarms are difficult to detect the fire at the first time and promptly alarm, especially for large parking stations, most vehicles are far away from smoke alarms. The fire warning device provided by the invention comprises a fire detector, which is connected to afixing structure capable of being fixed on a parking space, wherein the fixing structure can be installed on the ground of the parking space or in a pre-dug parking space cavity; and the fire detector is a smoke sensor or/and a temperature sensor or/and a flame detection sensor. The invention provides the fire warning device which can be fixed on a parking space, and can detect the fire of a vehicle in time and give an alarm immediately, and is particularly suitable for new energy vehicles. The invention breaks the technical prejudice of the existing suspension installation, and can detect the fire in time, thereby winning time for fire suppression and the transfer of personnel and finance.