Abstract: The aim of this paper shows the prospective routine of Li-Fi technology and its features to increase the performance of data transmission and various applications where Li-Fi has been placed to use. The modern society is highly affected by modern communication technology. Almost all the level of peoples are using web to complete the chore through wireless network. As amount of users are increases in using wireless network, this has unfortunately led to an increase in network complexity, speed decreases, shortage of wireless radio bandwidth and an increased risk of interference of radio frequencies. Moreover efficiency and safety of the internet are dominating issues now. Though Wi-Fi gives us speed up to 150mbps, which is not sufficient to accommodate number of anticipated users. To Resolving this limitation of Wi-Fi, a new technology always is desirable and, there are enormous new technologies participating to make sophisticated environment for an end user. As a result, Li-Fi has been introduced that could provide a connection that's 100 times faster than traditional Wi-Fi, Li-Fi provides better effectiveness, handiness and safety than Wi-Fi. It has gained a huge popularity in short range of year. Such technology has brought not only speed but harmless and inexpensive future of communication. The immense usage of Li-Fi may solve some tailback of Wi-Fi technology. In the present; this paper made an exhaustive study on Li-Fi technology, working techniques, and related researches which used Li-Fi technology.