The invention discloses a device capable of measuring the influence of a multi-pool fire disaster of any size on target equipment. The device comprises a fuel supply pool, a fuel buffer pool, an industrial personal computer, a fuel combustion pool, the target equipment, detection equipment, an overflow recovery pool, a weighing pressure sensor, a bracket, a flow controller, a valve and a connecting pipeline, combustion liquid level control and mass combustion rate measurement can be realized, and influence of multi-pool fire disasters of storage tanks with different sizes, different numbers and different heights on the surrounding equipment can be realized. The device is advantaged in that simulation experiments of different scenes can be realized according to research requirements, influence of the multi-pool fire device of any size on the target equipment is measured, and the whole experimental device is detachable, easy to install and reusable.