The invention discloses a fire fighting tank improvement structure convenient to transport, which comprises a tank body. A sleeve sleeves outside the tank body; at least two grooves are formed in a circumferential wall surface of the sleeve, and are axially symmetrical regarding to a central axis of the tank body; a foldable rolling wheel group is arranged in each groove, and comprises a rolling wheel, a first connecting arm, a second connecting arm and an installation seat connected sequentially; each rolling wheel is connected with each first connecting arm through a rotary shaft; one end ofeach second connecting arm is hinged with each first connecting arm; the other end of each second connecting arm is movably connected with each installation seat; each installation seat penetrates through a bottom surface of each groove so as to be fixed with the tank body; after central axes of the first connecting arms and the second connecting arms are located on the same straight line, the axial length of each first connecting arm and each second connecting arm is larger than or equal to a perpendicular distance between the lowest point of each installation seat and a bottom surface of the tank body. The fire fighting tank improvement structure convenient to transport provided by the invention solves the problems that in the prior art, a fire fighting tank is heavy and effort-consuming to drag, so that the fire rescue efficiency is lower.