The invention relates to a Geoword-based multivariate power time series data indexing method. The Geoword-based multivariate power time series data indexing method comprises the following steps of obtaining original multivariate power time series data, and performing dimension reduction on the original multivariate power time series data; conducting Geoword encoding on dimension-reduced multivariate power time series data, and obtaining an MTSAX expression of the multivariate power time series data; constructing MTSAX data indexes of a multivariate power time series according to the MTSAX expression. Compared with the prior art, the Geoword-based multivariate power time series data indexing method can conduct dynamic division, specifies the precision, has no overlapped nodes and the like.