Wyrtki jet is an easterly jet that occurs during the monsoon transition period in the equatorial Indian Ocean. It generates abundant zonal redistribution of heat, salt, and water masses, which plays an important role in ocean thermohaline circulation of the eastern Indian Ocean and even global ocean. The intraseasonal variability of Wyrtki jet is related to the equatorial Kelvin waves and has a significant impact on the intraseasonal variability of the Indonesian throughflow in the outflow straits. It is also a triggering factor for the Indian Ocean Dipole. In addition, intraseasonal variability of Wyrtki jet can regulate the seasonal and interannual variabilities of Wyrtki jet across time scales, making it a potential important participant in climate variation of the tropical Indian Ocean and even the global world. Therefore, conducting in-depth research on the intraseasonal variability of Wyrtki jet is of great scientific significance for a profound understanding of the ocean circulation in tropical Indian Ocean as well as the process and mechanism of air-sea interaction in the Indian Ocean basin. This article mainly introduces the current research status of the intraseasonal variability of Wyrtki jet, and summarizes its generation mechanism as well as its seasonal and interannual variation characteristics. On this basis, future research on the intraseasonal variability of Wyrtki jet is prospected. We suggest that future research on the intraseasonal variability of Wyrtki jet can be conducted from two aspects: the correlation between the intraseasonal variability of Wyrtki jet and the Asian monsoon, and the correlation between the intraseasonal variability of Wyrtki jet and large-scale air-sea interaction events. Furthermore, it is pointed out that in the future, various methods such as observation, ocean circulation model and machine learning technology should be used to obtain data of Wyrtki jet. Based on these data, we can further clarify the impact of the intraseasonal variability of Wyrtki jet on local and global ocean and atmosphere, thereby improving understanding of the tropical Indian Ocean and global ocean circulation.