1, appearance quality: the appearance should be smooth and flat, without scratches and sharp corners, and pay attention to the material of the appearance, especially the plastic material should not have pungent plastic smell.

2, price: according to the difference between grade and function, the price difference is also great. When purchasing, you can choose a product with the right price. Don't pursue fancy functions too much and ignore some basic cost performance.

3, look for well-known brands: good quality coffee machine not only has technical guarantee, but also has perfect after-sales service, which makes people feel more at ease when using it.

How to clean the coffee machine

1, clean the brewing head of the coffee machine

After brewing, it is necessary to remove the coffee handle and pour out the coffee grounds inside. First, clean the switch, and then rinse the coffee grounds with hot water, so as to prevent the filtered water from flowing into the coffee, which will affect the quality of the coffee.

2, clean the steam bar

You can use a steam stick to beat the milk bubble, and then try it with a cloth to open the steam valve. You can also use steam to clean the dirt in the hole, so as to ensure that the air hole is smooth. If there are some solidified crystals on this steam stick, it will soften after soaking in water for ten minutes. After soaking, open the steam valve to test and see if it is unlocked.

3. Clean the water tray

After each use, take water from the water receiving tray, wipe it with a wet cloth, and then put it in its original position. If there is some sediment in this tray, it can be removed only by washing it with hot water or special cleaning powder. If there is some water leakage at the bottom, check whether the drainage pipe is blocked, and be sure to dredge it in time.