The invention provides a method for producing low-carbon steel for fire-fighting equipment based on an ESP thin slab continuous casting and rolling process. The method comprises: selecting raw materials according to a percent by mass: 0.02-0.06% of C, 0.01-0.05% of Si, 0.10-0.50% of Mn, smaller than or equal to 0.012% of S, smaller than or equal to 0.015% of P, smaller than or equal to 0.01% of O, smaller than or equal to 0.006% of N and the balance of iron; sequentially carrying out converter smelting, LF furnace smelting and RH furnace smelting on the raw materials; producing molten steel formed by RH furnace smelting into different thicknesses of hot-rolled band steel through an ESP production line, wherein in the ESP production line, the temperature of a finish rolling outlet is not lower than 800DEG C; and cooling the hot-rolled band steel to a room temperature, pressing the hot-rolled band steel by a 1-3% temper mill after acid pickling, and then, after straightening the hot-rolled band steel by a withdrawal straightener, coiling and unloading a coil. By utilizing the method, the problems of a traditional plate cold-rolling and annealing technology for producing steel for fire-fighting equipment, such as high production cost, high energy consumption and large environmental pollution, can be solved.