It is undeniable that this has been a common scene and the overuse of computers has aroused great concern. In my opinion, people should be cautious of the excessive use of computers for the following reasons. In the first place, it will inevitably affect people’s health if they sit before computers and stare at the screens for long hours, which may result in muscle pain and visual impair. Secondly, playing computers alone isolates people from others. Relationships in the real world are maintained through human contact and spending time with each other instead of chitchatting online. In summary, people should cut down their computer use for health and social reasons. Computers are not controllers but tools in our life.