PURPOSE: To provide a communication line built-in fire hose for fire fighting by which a signal for controlling valve adjustment of a feed water pump side from a water discharging side can be transmitted, and fire fighting action can be performed quickly, securely, and smoothly.

CONSTITUTION: This communication line built-in fire hose for fire fighting is provided with plural double-structured pressure-proof fire hose 7 of equal length which are composed of an inside hose of relatively smaller diameter and an outside hose of relatively larger diameter by which the inside hose is surrounded coaxially, and with two or more electrically-insulated coated signal lines 10a-10d which are arranged at an equal interval between the inside hose and the outside hose of each pressure-proof hose and are extended to whole of the length of the double-structured pressure-proof hose 7. And this fire hose is also provided with a male connector 8 and a female connector 9 which are fittedly-attached to one end and the other end of the double- structured hose 7 and on the outside of which connecting electric conductors which are connected respectively with one end and the other end of each signal line 10a-10d are arranged.