A hydroxysafflor yellow A sodium compound as shown in a formula (I) and preparation as well as medicinal application thereof are provided. According to the present invention, the safflower is utilized as a raw material. A monomer pharmaceutical compound, the hydroxysafflor yellow A sodium, is obtained by sufficient processes, and a purity thereof is surely above 98.5%. Therefore, the hydroxysafflor yellow A sodium is a monomer compound, which is safer, more effective, more stable and more controllable than hydroxysafflor yellow A, for treating blood circulation disorders such as platelet aggregation, coronary heart disease, angina pectoris and acute cerebral ischemia. Furthermore, the hydroxysafflor yellow A sodium has sufficient solubility and human tolerance.