1, look at the structure: it's really agarwood, no matter whether the texture is good or not, there are oil lines in it. In the light, this oil line will shine. You can observe it with a magnifying glass. The fake agarwood can't see the oil line, and its brown eyes are black, just like mud piled up.

2. Weight: The higher the oil content of natural agarwood, the greater the weight and the lighter the oil content. If it is agarwood made of bamboo, it will be lighter, and other hardwoods will be heavier than agarwood.

3, smell: people who often smell agarwood will not forget the fresh and natural fragrance. If you smell a pungent aroma during the purchase process, you should pay attention.

4, touch the face: oily agarwood, feel very moist and comfortable, there will be no oil after playing. Fakes that have been soaked in oil will feel sticky to varying degrees when playing, and even get a little oil on their hands. With a little effort, the real agarwood will give off a faint fragrance.

The above contents refer to Baidu Encyclopedia-Aquilaria sinensis.