Microscopic root canal treatment is to perform root canal treatment under the microscope. Inflammation of the pulp or pulp necrosis for microscopic root canal treatment requires the following three times: 1) cleaning the tooth under the microscope and then sealing anti-inflammatory medication; 2) using the microscope to prepare the root canal, cleaning the infected material inside the root canal, and then sealing the anti-inflammatory medication on it with the assistance of a microscope; 3) microscope-assisted root canal filling, filling the empty part of the root canal with dental adhesive, and finally filling the tooth under the microscope. The empty part of the root canal is filled with dental adhesive, and finally the tooth is filled under the microscope. The microscope can make the field of view more enlarged, thus making the operation more detailed and reducing more subtle problems.