The freezer is a must have electrical appliances in each family, if the use of time has reached a certain number of years, it will be more prone to some failures, mainly because the internal parts of the freezer aging, or road damage caused by internal leakage. When there is a leak in the freezer, people must find it in time, so that they can do a good job of maintenance. Therefore, people need to understand the inspection method of leakage in the freezer, which can be found in time so that it can be repaired in time.