In the past few years, the figure of children watching tiktok has become higher and higher. For many parents, keep their child staying at home and watching tiktok is a good way so that they can control their kids and do somethings else without worrying. However, everything has its pros and cons. In this essay, i will discuss the reasons why children love watching tiktok and some advantages and disadvantages of allowing kids to use smartphone to watch tiktok.