The invention relates to the technical field of range hoods, and discloses a range hood cleaning assembly. The range hood cleaning assembly comprises a pressing plate seat (1), a pressing plate (2), a cleaning spray pipe (3) and a sensor (4), wherein the sensor (4) is connected to the pressing plate seat (1) which is provided with a spray pipe accommodating groove (11), and the cleaning spray pipe (3) is accommodated in the spray pipe accommodating groove (11) and fixed through the pressing plate (2). According to the range hood cleaning assembly, the spray pipe accommodating groove is formed in the pressing plate seat, the cleaning spray pipe is accommodated in the spray pipe accommodating groove and fixed through the pressing plate, and therefore the cleaning spray pipe is fixed and limited; and meanwhile, the sensor used for detecting the cleaning effect is also stably connected to the pressing plate seat, and thus the range hood cleaning assembly is reliably fixed and integrated, and the assembling efficiency in production and manufacturing is improved.