The invention provides a shallow sea raft culture method suitable for healthy and efficient growth of shellfish. The technical scheme is described as follows: the method comprises iron anchor fixing rings (1), floaters (2), lifting ropes (3), clamping lugs (4), cross rods (5), floater fixing rings (6), vertical rods (7), mooring ropes (8), iron anchors (9), culture cages (10), rope slings (11), valve rods (12), lower-layer valve rods (13) and upright rods (14). According to the method, raft culture is carried out from a near shore to a far shore and then at different sea areas of the near shore at different time periods, so that the cultured shellfish can be enabled to grow in an appropriate water environment all the time; by drawing up distribution points of a culture sea area, the water environment is monitored regularly, so that the quality and the yield of the shellfish can be ensured.