[Abstract]<br>With the improvement of people's quality of life, people have higher and higher requirements for living environment. But at present, the air quality is getting worse and worse, and the phenomenon of various pollutants exceeding the standard is very prominent. Therefore, we need to improve our living environment through some scientific and technological means. So for many people, air purifier is an effective and good choice, and how to choose a brand in the face of a lot of brands is a headache for every customer. They don't know what kind of brand is suitable for them. So when designing air purifier, how can we grasp the pain points of users and solve it, and make it more convenient when serving people Meet our needs.<br>
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