Provided are taxanes compounds having the structure of formula I, preparation method thereof, and uses of compositions having the compound, pharmaceutical salts and solvates thereof as active ingredients in the preparation of oral antitumor drugs. In the formula, R1 is —COR6, —COOR6, and —CONR7aR7b; R2 is C1-C6 alkyl, C1-C6 alkenyl group, a substituted hydrocarbon group, a heterocyclic group, an aromatic group or a substituted aromatic group; R3 is —OR6, —OCOOR6, —OCOSR6, and —OCONR7aR7b; R4 is —OR6, —OCOOR6, —OCOSR6, —OCONR7aR7b, H, and OH; R6 is C1-C6 alkyl, C1-C6 alkenyl, C1-C6 alkynyl group, a substituted hydrocarbon group, an aromatic group or a heterocyclic group; and R7a and R7b are respectively hydrogen, a hydrocarbon group, a substituted hydrocarbon group or a heterocyclic group.