The disclosure relates to an evaporating assembly and a humidifier. The evaporating assembly includes a fixing shaft and at least two evaporating bodies. Each of the evaporating bodies is provided with a mounting hole and at least one group of limiting portions, wherein each of the evaporating bodies is detachably mounted on to the fixing shaft via the mounting hole, and the limiting portions on every two of the evaporating bodies that are adjacent to each other are abuttingly mated so that a first gap is formed between every two of the adjacent evaporating bodies.