With the increasing significance of the "double-high" (i.e., high penetration of renewable energy plus high penetration of power electronic equipment) characteristic, the supraharmonics emissions in the frequency range of 2 kHz~150 kHz in power grids are increasing, and the novel power quality problems and faults caused by them are also increasing. This paper combs and summarizes the existing supraharmonics measurement methods, including the three candidate methods recommended by IEC, as well as the supraharmonics measurement methods proposed by researchers from many countries in recent years, including the nonparametric methods such as subsampling, compressed sensing, and wavelet packet decomposition, and the parametric methods such as ESPRIT and matrix pencil method; it also focuses on the principles, technical implementation features, performance indices, advantages and shortcomings of these measurement methods, as well as the developmental history of the several measurement methods that have been continuously progressing to high resolution and accuracy, and points to the new tasks and new directions for the future research of supraharmonics measurement methods.