A complete communication system must encompass a full two-way communication link, which includes both uplink and downlink. The uplink has always been a challenge for two-way communication systems. In recent years, the rapid development of visible light communication technology, with its advantages of no electromagnetic radiation, large communication capacity, and environmental friendliness, can serve as a supplement to traditional uplink solutions. The article first introduces the application scenarios and system composition of visible light communication, and then provides a review of the current research status of visible light uplink at home and abroad in recent years. In addition, it presents various schemes for visible light uplink, such as visible light with radio frequency, visible light with visible light, visible light with power line carrier, and single-source reverse modulation technology. Finally, it summarizes the current issues faced by the visible light communication uplink and summarizes the advantages and disadvantages of various schemes, as well as prospects for future development trends.