Abstract: This article analyzes the key difficulties and establishes the idea of using pneumatic drill combined with in-hole imaging based on extensive research. Then, targeted selection and design are carried out to optimize a modular pneumatic drill, which can be disassembled and transported by two people in the largest single unit, meeting the transportation requirements in steep mountainous areas. Combined with intelligent in-hole television instrument to observe the situation in the hole and generate electronic core, it can be used to define the distribution of strata. The implementation of the pneumatic drill in a water-free limestone mountain area indicates that the pneumatic drill has a greater advantage over the hundredtype drill in drilling efficiency and overall efficiency in water-free mountainous areas. With the intelligent in-hole television instrument, the formation can be accurately defined. This equipment and survey mode have certain promotional value in water-free steep mountainous areas.