this invention relates to a kind of erianin salt and the preparing process thereof . the said erianin salt is a compound with the following general formula , wherein r is the salt formed by monobasic acid radical of inorganic oxacid combining with metals , ammonium salts , organic amine . this invention also relates to a pharmaceutical composition comprising erianin salt . compared with erianin , the said erianin salt has far better solubility , which can improve the bioavailability and show better antineoplastic efficacy .