The invention relates to the technical field of fire-fighting truck, and especially relates to a fire-fighting truck chemical washing chamber and a fire-fighting truck. The fire-fighting truck comprises a driver cab and a carriage; a power supply device, a washing device, and a chemical washing chamber are arranged in the carriage; the washing device comprises a water storage tank, a washing heating machine, a neutralizing liquid device for chemical washing, and a washing pipeline system; the washing heating machine is communicated with the water storage tank, the neutralizing liquid device and the chemical washing chamber through the washing pipeline system; the chemical washing chamber comprises a washing chamber skeleton assembly, a front sealing plate and a rear sealing plate, which are arranged oppositely, a left sealing plate and a right sealing plate, which are arranged oppositely, a top plate and a bottom plate, which are arranged oppositely, and a middle partition plate. Compared with the prior art, the provided fire-fighting truck has a plurality of functions such as indoor/outdoor washing, cold/hot water supplying, electricity supplying, and the like, and has the advantages of high washing efficiency, convenient operation, safety, and reliability.