The invention discloses a silicone rubber high-voltage bus extruding production system with a single-layer machine head. The silicone rubber high-voltage bus extruding production system comprises traction equipment, the single-layer machine head, extruding equipment and a drying channel. A high-voltage bus is clamped by the traction equipment to the single-layer machine head. A feeding opening of the single-layer machine head is connected with the extruding equipment. The bus outlet end of the single-layer machine head is connected with the drying channel, and the single-layer machine head comprises a machine neck, a machine head body, a division sleeve, a mold rod, a mold sleeve and a mold core. The division sleeve is arranged on the mold rod in a sleeving mode. The machine head body is arranged on the division sleeve in a sleeving mode. The mold core is clamped at the bus outlet end of the mold rod. The mold sleeve is arranged on the mold core in a sleeving mode. The mold sleeve is in clearance fit with the mold core. The machine neck is communicated with the machine head body. Cold contraction wrapping of silicone rubber can be effectively carried out on the high-voltage bus. Equipment is simple and use is convenient; production efficiency can be effectively improved, and the effective service life of a protection layer on the high-voltage bus can be prolonged.