A method for producing an anionized meso-form double-cross-linked ligand represented by formula (3), including: bringing a compound represented by formula (1) into contact with a compound represented by formula (2) at −25° C. or less; and introducing an anionizing agent within 5 hours after the contact, wherein R1 to R10 are independently a hydrogen atom, a hydrocarbon group having 1 to 20 carbon atoms, or the like; A and A′ are independently a cross-linking group containing an atom belonging to the 14th group of the periodic table; M and M′ are independently an atom belonging to the 1st or the 2nd group of the periodic table.