The invention discloses a rabbitfish siganus oramin parent fish rearing method, which comprises the following steps: S1, trapping wild young fish in the natural environment, and then feeding the youngfish respectively in different net cages of the same pond according to trapped months; S2, maintaining the water body and water quality of the pond to be stable, and breeding the young fish for a period of time until the young fish grow and develop to maturity; S3, choosing individuals, which have large bodies, good vitality and wound-free body surfaces, as parent fish from sexually mature fish,and carrying out maturity inspection on the parent fish; and S4, carrying out artificial spawning induction and fertilization on mature fish. The life habit of rabbitfish siganus oramin is utilized tofeed the young fish in the different net cages of the same pond according to the trapped months, the mature degrees of parent fish reared in each batch can be different in different seasons, meanwhile, the young fish in each net cage basically develop to mature within the same period of time, the manpower, material resources and time required for screening the parent fish are substantially reduced, and the competitiveness of the parent fish is improved.