The invention relates to an air perfuming machine, comprising a shell, wherein an essential oil bottle, a mandril and a catalysis bud head are arranged in the shell; the air perfuming machine is characterized in that a support in detachable connection with the catalysis bud head is arranged in the shell, the support is provided with a circuit board, the circuit board is provided with a mounting hole for the catalysis bud head to pass through, the catalysis bud head comprises a cover body, the periphery of the cover body is provided with a containing cavity which is defined by a convex wall, and capable of containing the mandril, and the cover body is provided with at least one through hole at a position opposite to the end part of the mandril. Compared with the prior art, the air perfuming machine has the advantages that the catalysis bud head is in detachable connection with the support for further achieving the aim of directly replacing the essential oil bottle; besides, the support is provided with the circuit board, the circuit board is provided with the mounting hole for the catalysis bud head to pass through, and the catalysis bud head is provided with the containing cavity capable of containing the mandril, and the containing cavity can ensure that all heat of the catalysis bud head is used for heating the mandril, so the heat loss is small, and an essential oil volatilization rate enables a temperature to quickly rise to 100 DEG C within a short time of 30s-1min.