Abstract: Based on investigation of the fire alarms, fire disasters of product oil tank farm from class 1 to class 3 covering 16 departments, the analysis was made for fire probability, reliability of extinguish devices, the function of existing fire system, showing the current situation and alternate method of fire control, some measures of tank farm abroad. The fire work follows the police of "first is to take precaution, then con-bined with fire control", the future police is not dependant on enterprise alone, but a social force.