The self-propelled chain trencher is mainly used for trenching operations on construction sites, such as trenching for optical cables and cables, trenching for farmland water conservancy, trenching for laying pipelines, trenching for buried pipes, trenching for water pipes, trenching for frozen soil, urban trenching Gas pipeline ditching, telephone pole ditching, electric telephone line ditching, etc. With the development of communication and agriculture, the application of construction trenchers is more and more extensive.