The invention aims to provide a useful substrate for joss stick, which is provided with stable supply and economical performance and good mechanical forming applicability, has the physical properties when smoking to improve the volatilization rate of the pyrethroids which is used as the insecticidal components, has no stimulation, peculiar smell and others when smoking, has the conditions as substrate for joss stick, and can be used to extract slag powder and wood powder instead of pyrethrins. The invention obtains the powder through drying and grinding the extracting slag which contains green tea or/and half-fermentation tea and belongs to one part of the raw materials, and supplies a substrate for joss stick which can solve the above subject and supplies mosquito repellent joss stick or flies repellent joss stick and other joss sticks adopting the above substrate.
