A solid titanium catalyst component comprising titanium, magnesium, halogen, a cyclic ester compound (a) represented by the following formula and a cyclic ester compound (b) represented by the following formula: wherein n is an integer of 5 to 10, R 2 and R 3 are each independently COOR 1 or R, at least one of R 2 and R 3 is COOR 1, and a single bond (except C a -C a bond, and C a -C b bond in the case where R 3 is R) in the cyclic skeleton may be replaced with a double bond, R 1 is each independently a monovalent hydrocarbon group of 1 to 20 carbon atoms, plural R are each independently an atom or a group selected from a hydrogen atom, a hydrocarbon group of 1 to 20 carbon atoms, a halogen atom, a nitrogen-containing group, an oxygen-containing group, a phosphorous-containing group, a halogen-containing group and a silicon-containing group, and they may be bonded to one another to from a ring, but at least one R is not a hydrogen atom, and in a skeleton of the ring formed by bonding of plural R to one another may be contained a double bond, and when two or more C a to each of which COOR 1 is bonded are contained in the skeleton of the ring, the number of carbon atoms to constitute the skeleton of the ring is 5 to 10; wherein n is an integer of 5 to 10, and R 4 and R 5 are each independently COOR 1 or a hydrogen atom, at least one of R 9 and R 5 is COOR 1, R 1 is each independently a monovalent hydrocarbon group of 1 to 20 carbon atoms, and a single bond (except C a -C a bond, and C a -C b bond in the case where R 5 is R) in the cyclic skeleton may be replaced with a double bond. wherein n is an integer of 5 to 10, R 2 and R 3 are each independently COOR 1 or R, at least one of R 2 and R 3 is COOR 1, and a single bond (except C a -C a bond, and C a -C b bond in the case where R 3 is R) in the cyclic skeleton may be replaced with a double bond, R 1 is each independently a monovalent hydrocarbon group of 1 to 20 carbon atoms, plural R are each independently an atom or a group selected from a hydrogen atom, a hydrocarbon group of 1 to 20 carbon atoms, a halogen atom, a nitrogen-containing group, an oxygen-containing group, a phosphorous-containing group, a halogen-containing group and a silicon-containing group, and they may be bonded to one another to from a ring, but at least one R is not a hydrogen atom, and in a skeleton of the ring formed by bonding of plural R to one another may be contained a double bond, and when two or more C a to each of which COOR 1 is bonded are contained in the skeleton of the ring, the number of carbon atoms to constitute the skeleton of the ring is 5 to 10; wherein n is an integer of 5 to 10, and R 4 and R 5 are each independently COOR 1 or a hydrogen atom, at least one of R 9 and R 5 is COOR 1, R 1 is each independently a monovalent hydrocarbon group of 1 to 20 carbon atoms, and a single bond (except C a -C a bond, and C a -C b bond in the case where R 5 is R) in the cyclic skeleton may be replaced with a double bond. wherein n is an integer of 5 to 10, and R 4 and R 5 are each independently COOR 1 or a hydrogen atom, at least one of R 9 and R 5 is COOR 1, R 1 is each independently a monovalent hydrocarbon group of 1 to 20 carbon atoms, and a single bond (except C a -C a bond, and C a -C b bond in the case where R 5 is R) in the cyclic skeleton may be replaced with a double bond.