Biochar has a wide range of applications, including heat and power generation as well as soil amendment. Carbonized biomass characteristics are determined by the feedstock and process parameters. Selection of acceptable conditions to manufacture a char with the necessary qualities thus necessitates quantitative and qualitative knowledge of dependencies and affecting factors. This document summarises and reviews the findings of a vast number of biochar manufacturing studies in order to provide a broad picture of the field feedstock selection and process design qualities that can be achieved Both are included in the manufacturing process. at high temperatures, torrefaction and slow pyrolysis. The analysis of the data revealed that among all The treatment temperature has by far the most significant impact on the process conditions.