Mobile devices, also known as pipeline bubble foam fire extinguishing devices, when used with the device interface with the fire water supply source interface can be used in series. Mainly used for fighting, B, C and non-water soluble liquid fire A, B, C liquid handling areas and storage areas and easy place to leak. The device is suitable for municipal residential areas, industrial enterprises, oil tanks, chemical sector, heat treatment shop, gas stations and other places for help underground water source is ground fire hydrant, fire hydrant, and fire pump motor for use with water tankers, etc.. Mobile foam fire extinguishing device has a cheap, easy to use and maintenance operation, injection time is long, high fire performance characteristics of industrial enterprises is an ideal fire-fighting equipment, is also attached to the city fire brigade professional rehydration points. The devices are generally two operations, one person with access and open the fire hydrant fire hydrant water supply valve; another person connected with the water spray gun and spray gun fire.