Scales on the market are divided into body fat scales and weighing scale scales. Pregnant women should use the body fat scales with caution, because there is a micro-current passing through the body, and then various body composition data can be obtained by measuring the body resistivity. Generally, the body is equipped with metal equipment such as pacemakers, and infants are not recommended to use the body fat scales. Pregnant women can use weighing scale, which is specially designed for pregnant women. Bluetooth can intelligently connect the fruit-bearing APP, read the values, give health advice, and generate monthly reports to scientifically manage the weight during pregnancy. There are also a variety of gestation gadgets, such as whether they can be eaten, whether they can be done, and the management of prenatal records, which are good helpers for expectant mothers.