研究了利用微波技术快速测量奶粉的水分的方法。用最小二乘法研究了奶粉水分含量的校准模型，并将微波法的测量结果与标准失重法进行了比较，结果表明微波法测量误差小于0.2%。因此，微波法有望成为奶粉工业生产中水分测量控制的一种重要方法。

The principle of quick determining water content of milk power by microwave method is studied. The calibration models of water content of milk power are established with least square method and the results achieved using microwave method are compared with the results determined by standard methods. It was found that the standard deviation using microwave method was less than 0.2% Therefore, microwave technique would be a powerful tool to determine water content of milk power in the production of milk powder.