In agricultural management, watering is a problem for vegetable farmers. Because soil moisture is invisible substances, it is difficult to accurately control the actual production. In the face of complicated weather, if there is a problem in the watering, it is easy to cause a variety of problems. In order to better implement soil moisture management, many modern agricultural production bases have begun to use the GPS soil moisture measuring instrument to monitor soil moisture. Using this instrument not only can quickly and accurately obtain soil moisture data, but also can Realize accurate irrigation, maintain soil moisture balance, and meet crop growth needs. Maintaining a good balance of soil moisture is critical for growing crops such as vegetables. Dry or too wet soil can easily affect plant growth. In the past, the watering habits of vegetable farmers were watered according to days and watered according to experience. In fact, this method was very wrong. The correct irrigation should be determined according to the actual soil moisture value measured by the GPS soil moisture meter, combined with the need of soil moisture for vegetables and other crop growth periods to determine the amount of water. For example, in the soil moisture management of vegetables in winter, when the soil moisture content is lower than 40%, it is not conducive to the absorption of nutrients, and when the water content exceeds 80%, it will easily lead to the deterioration of the soil permeability, and the lack of oxygen in the roots, resulting in roots. Therefore, the correct management method should be to use the GPS soil moisture quickness meter to maintain the soil moisture within a suitable range and maintain the soil moisture balance, so as to effectively ensure the increase of crop yields and income. The use of GPS soil moisture measuring instrument to achieve efficient and accurate water control can give full play to the role of soil moisture in the promotion of crop growth, and further improve soil quality and plant growth. Therefore, with the development of science and technology agriculture, GPS soil moisture measurement instrument has gradually become a standard product of high standards of vegetable fields, farmland, and field construction, and plays an important role in the actual production process improvement process. Ningbo Xuanchang Electric Co.,Ltd. , https://www.xuanchangpurifier.com