Fire monitor is a kind of effective equipment for extinguishing great fire. They can be operated by manual,or electric motor. The fire monitor is composed of monitor body, spray assembly, operator and accessories. Monitor body can rotate in horizontal and vertical. The body can be fixed or portable, and can be operated by lever, hand wheel, electric unit or hydraulic unit. The spray assembly, such as nozzle or foam tube is an important part of monitor. The nozzle is used for spraying water, and AFFF solution. The foam tube is used for spraying protein foam solution. The operator such as hand wheel, electric unit, and hydraulic motor, is chosen by owner.