Groundwater monitoring wells are public welfare permanent infrastructure for groundwater monitoring, and construction quality directly determines its performance in the later period. Groundwater monitoring stations in Henan are mainly distributed in Huanghuai Plain, Nanyang Basin, Luoyang Basin, and Lingsan Basin. The types of groundwater to be monitored are mainly pore water, followed by bedrock fissure water and karst water. According to the characteristics and geological conditions of the monitoring wells, drilling processes such as pump suction reverse circulation, direct rotary drilling, percussive drilling, and air down-hole-hammer drilling are adopted. The article analyzes the characteristics and field performance of each process, which can be used as reference for similar projects.