The present invention relates to a preparation method of solid titanium
catalyst for olefin polymerization comprising the steps of: (1) preparing
a magnesium compound solution by dissolving a magnesium halide compound
into a mixed solvent of a cyclic ether and one or more of alcohol; (2)
preparing a carrier by adding firstly a titanium halide compound to the
magnesium compound solution at low temperature, elevating the temperature
of the resulted solution or aging it, and then thereto adding secondly
the titanium halide compound additionally; (3) preparing a titanium
catalyst by reacting the carrier with a titanium compound and an electron
donor; and (4) washing the titanium catalyst with hydrocarbon solvent at
high temperature.