1. Remove scale with vinegar. My method is to mix white vinegar with tap water at the ratio of 1: 1, then pour the vinegar-water mixture into the electric kettle, turn on the power and boil for about 5 minutes. At this time, acetic acid in vinegar can play a slight corrosive role and react with calcified substances in scale. After boiling for 5 minutes, I will turn off the power and let the kettle cool naturally to the temperature I can be good at. Then you can pour out the vinegar-water mixture and rinse it with tap water several times to wash off the dissolved scale. I found that this vinegar method can effectively dissolve the calcified scale accumulated in the hard water of the kettle, and it can keep the electric kettle clean when used frequently. You can also try this simple and convenient vinegar method to make the electric kettle glow again. 2. Use lemon juice to remove scale. Pour fresh lemon juice into the electric kettle, then add appropriate amount of water, turn on the power and cook for about 5 minutes. Lemon juice is rich in citric acid, which can dissolve scale, especially for calcified scale accumulated in hard water. After boiling for 5 minutes, turn off the power and wait for the kettle to cool to a suitable temperature. Then you can pour out the lemonade and rinse it with clear water several times, and the scale can be dissolved and removed. This lemon juice method is more effective than the simple white vinegar method, and there is no pungent smell of acetic acid. You can try to remove the scale from the electric kettle with lemon juice to make it clean and bright again. 3. The method of descaling with baking soda powder is to mix a proper amount of baking soda powder with a small amount of water and stir it into a paste. Then dip baking soda with a small brush or soft cloth and smear it on the inner wall and bottom of the electric kettle. Let stand for about 30 minutes after spreading evenly. Soda powder itself has a slight corrosive effect and can react with scale. After 30 minutes, rinse the electric kettle with clear water to remove the loose scale on the surface. After baking soda treatment, the inner wall of the kettle will reproduce its clean and translucent nature. Therefore, we can try to use baking soda as a convenient and economical method to remove the scale in the electric kettle. 4. Cook with rice to remove scale. Finally, a method to remove the scale of the older generation at home is introduced. First put an appropriate amount of white rice in the electric kettle, then add water, turn on the power supply and cook for 5- 10 minutes. When rice and water are cooked, starch will be produced. These starches can react with the scale on the inner wall of the kettle to form soluble substances. After the rice is cooked, pour out the water and rice inside. In this way, the scale on the inner wall of the kettle can also be removed by reaction. I found that this method is also effective for severe scale. And only some rice is needed to complete the cleaning. You can try this simple and economical cooking method to remove the stubborn scale in the electric kettle.