The invention discloses an automatic riveting machine for a multi-layer circuit board, which comprising a machine platform, a conveying mechanism, a grabbing mechanism, a bidirectional sliding mechanism and a drilling and riveting mechanism. A plurality of circuit boards can be placed on a holding disc, the holding disc is fixed on a conveying platform of the conveying mechanism, the conveying platform is used for conveying the circuit boards to the drilling and riveting mechanism at the other end of the machine platform, so that the drilling and riveting mechanism automatically makes bidirectional movement and feeding to carry out hole-drilling and riveting operations on the edges of the circuit boards; the conveying platform is used for sending the riveted circuit boards back to the space below the grabbing mechanism, which ensures that the grabbing mechanism lifts the circuit boards and the holding disc to complete the full automatic hole-drilling and riveting process. By using the full automatic riveting machine for a multi-layer circuit board, the bidirectionally-moving hole-drilling and riveting mechanism can automatically complete the hole-drilling and riveting operation of an entire row after the multi-layer circuit board is moved in place so as to complete high-precision and high-efficiency hole drilling and riveting.