Abstract: Buried components are common in power construction operations, with a variety of types and quantities. If encountering relocation operations, it is necessary to dismantle the buried components in a timely manner. To ensure the effectiveness of demolition, it is necessary to introduce specialized demolition devices. The simple dismantling and removal device for 0.4 kV buried components proposed in this article is designed for low-voltage distribution operation, maintenance, and relocation operations. Its application can not only reduce manpower investment in the demolition industry, but also improve the safety of demolition operations. It is worth vigorously promoting in power distribution operation and maintenance, as well as underground component demolition operations. This article also explains the design of a simple dismantling device for 0.4 kV buried components and explores its application accordingly.