The invention relates to a method for producing at least one fuselage cell of an aircraft with the following steps : at least partial production of surface protection and thermal insulation in the region of the at least one shell part, at least partial introduction of technical outfitting systems 1-3, 10-12, 22-24, 46-48, in particular of electrical and hydraulic lines, air-conditioning lines, electrical and hydraulic appliances, sanitary and catering equipment or the like, into the at least one shell part and / or the at least one floor grid 13, 41, and assembly of the at least one shell part and of the at least one floor grid 13, 41 into the at least one fuselage section 32.