The microwave oven filter mainly has the following functions: 1. Filter oil fumes and odors. 2. Protect the internal components of the microwave oven: prevent oil pollution and reduce dust entry. 3. Improve the performance and efficiency of the microwave oven. A clean internal environment of the microwave oven helps improve the heating performance and efficiency of the microwave oven. Without excessive oil fumes and dust interference, the energy of the microwave oven can be more concentrated on food, thereby shortening the heating time and reducing energy consumption.