Abstract:Kidney diseases pose a major global health burden with high incidence and mortality. Early stages often lack symptoms, leading to significant damage before detection. Current research on early diagnostic biomarkers relies on genomics, proteomics, and transcriptomics, but these methods lack spatial and temporal information. Metabolomics shows increasing potential for identifying disease mechanisms, aiding diagnosis, and developing treatments for kidney diseases. Spatial metabolomics, the latest addition to the omics toolkit, enables in situ mass spectrometry analysis of fresh tissue, preserving spatial and temporal information. This review summarizes the progress of spatial metabolomics in kidney disease research, including understanding diabetic nephropathy pathogenesis and differentiating renal cell carcinoma from normal tissue.