The present invention provides a an angiotensin receptor antagonist and creatine phosphate sodium complex and uses thereof, wherein the complex comprises an angiotensin receptor antagonist and creatine phosphate sodium, a molar ratio of the angiotensin receptor antagonist to the creatine phosphate sodium is 1:1-2, and the angiotensin receptor antagonist is selected from valsartan, losartan, irbesartan, telmisartan, eprosartan, candesartan, olmesartan, saprisartan, tasosartan, and elisartan. According to the present invention, the complex is formed by compounding the angiotensin receptor antagonist and the creatine phosphate sodium, and provides the unexpected double effect and the synergistic effect for treatment of heart failure and high blood pressure, the cocrystallization salt hydrate formed by linking the hydrogen bond has the stable characteristic, the pharmacokinetic property is significantly provided, and the positive application prospects are provided in the fields of anti-high blood pressure treatment and anti-heart failure treatment.