The effects of different cooling media on mineral composition and color characteristics of white Portland cement clinker were studied by spectrophotometry and XRD-Rietveld quantitative analysis. The results show that compared with air cooling， the whiteness value of water cooling clinker is significantly increased， and metal ion chelating agent EDTA-disodium solution and sulfur dioxide urea solution cooling have better whitening effect than water cooling. Solution cooling can significantly improve the Hunter whiteness of clinker by increasing the clinker's L* value and changing the value of b* and a*.The cooling medium also has a certain influence on the mineral composition， amorphous phase and calcium silicate crystal type of the clinker， thus affecting the color development characteristics of the clinker.