The invention relates to an island expose and multi-salient-point island expose lead frame structure and a carving and plating method thereof. The island expose and multi-salient-point island expose lead frame structure comprises two groups of islands (1) and pins (2); the first group of islands are first islands (1.1), and the other group of islands are second islands (1.2), the front faces of which are set to be in a multi-salient-point structure; the front faces and the back faces of the islands (1) and the pins (2) are respectively provided with a first metal layer (4) and a second metal layer (5); plastic package material (3) containing no fillings is embedded in a region at the peripheries of the pins (2), a region between each island (1) and each pin (2), a region between each first island (1.1) and each second island (1.2) and a region between the pins (2); and the sizes of the back faces of the islands and the pins are less than those of the front faces of the islands and thepins, thereby forming an island and pin structure with a large upper part and a small lower part. The invention has the advantages that the plastic package body and the metal pin have high binding capacity.