There is a male colleague in the company. I don't know him, but he always likes to look at me sometimes. Should I bother such a person? Tell him?

Since you asked whether to disturb such a person, it shows that you are not sure about this matter and don't know whether to say it or not.

First of all, you are not familiar with this male colleague. You can look at it from the bottom of your heart. If you really hate him doing this, you don't know him well anyway, and there is no intersection and contact between you at work. Then you might as well tell him the truth, but be tactful. Don't just say that you are angry with him. You can tell him that he makes you feel uncomfortable and it is impolite for him to do so.

But if you don't bother about this kind of thing and just want to know this man out of curiosity, you might as well go to her side, chat with him more and get familiar with him.

So this matter still depends on how you view your wishes.