 This study examined the effects of pyrolysis temperature on the physical and chemical characteristics of apple tree branch biochar, ATB. The results showed that increasing pyrolysis temperature led to an increase in fixed carbon content, inorganic mineral content, and thermal stability. Additionally, the pH and ash content of the biochar increased with pyrolysis temperature while the ratio of organic to inorganic carbon decreased. Furthermore, the number of acidic functional groups decreased with pyrolysis temperature while the number of basic functional groups increased. Finally, the BET surface area and poor volume of the biochar increased with pyrolysis temperature, which indicates that pyrolysis temperature plays a key role in determining the physical and chemical characteristics of biochar. This article was authored by Shers Yongxiao, Na Ta and Su Dong Wang.