A pharmacological component includes: (a) phosphoric acid monoester； and (b) at least one precursor selected from glycerine and a non reducing sugar, wherein the molecular ratio of phosphoric acid monoamine to non reducing sugar is 1:1, 12-1:21.32, and the non reducing sugar is selected from trihalogens, sugar and manito.Referida a una composicion farmaceutica que comprende: (a) daptomicina； y (b) al menos un excipiente seleccionado de glicina y un azucar no reductor, donde a relacion molar de daptomicina al azucar no reductor es 1:1,12 a 1:21,32 y el azucar no reductor se selecciona de trehalosa, sacarosa y manitol
