The utility model provides a device for studying gas resistance influences soil infiltration, including an earth pillar section of thick bamboo, the moisture content probe, the barometer, the soil water potential probe, the balance, the marriotte bottle and the beaker that catchments, be equipped with three preformed hole on the earth pillar section of thick bamboo lateral wall, be equipped with the moisture content probe on the three preformed hole respectively, barometer and soil water potential probe, earth pillar bobbin top portion passes through the aqueduct and is connected with marriotte bottle, earth pillar bobbin base portion is equipped with the drainage breather pipe, the delivery port below of drain pipe is equipped with the beaker that catchments, an earth pillar section of thick bamboo sets up on the balance, the moisture content probe, barometer and soil water potential probe passing signal line are connected with data collection station. An earth pillar section of thick bamboo sets up for the multisection segmentation, and two adjacent earth pillar section of thick bamboos pass through connecting grooves and are connected tongue concatenation combination. Through adopting above -mentioned structure, on research unsaturated soil earth normal water divides migration law, soil moisture and flow of water distribution law's basis, can also study gas resistance and infiltrate the gaseous law of migrating in influence and the soil of law to unsaturated soil earth moisture.