Nowadays, the internet is one of the most powerful tools in the world because of its benefits. Besides the massive benefits the internet has brought to our life, the internet also has many disadvantages. A research has shown that the blue light emitted by devices such as smart phones, tablets and laptops can make people unable to go to sleep in a reasonable time. In addition, there are a lot of amusing services on the internet and it's easy to make you waste much time. Also, children can be negative and more violent because of the internet games that contain violence and negative information. Another disadvantage of using internet is that it has made people lazier because we can be easy to search information or buy or sell something we want by clicking. Moreover, the internet can bring viruses to computers and the viruses may destroy or leak personal information of users. In conclusion, everything has both advantages and drawbacks, so we need to use the internet wisely to enjoy its benefits