The present invention discloses a flow-guide die core, comprising a die core body, wherein four lead solution flow convergence ports are arranged in the end of the die core body, a flow-guide component, a primary flow-separation component and two secondary flow-separation components are arranged on the die core body, the primary flow-separation component and the flow-guide component are respectively arranged at both sides of the die core body, the two secondary flow-separation components are symmetrically arranged on the die core body, and four secondary flow-separation channels are formed on the die core body by the two secondary flow-separation components through the primary flow-separation component and the flow-guide component. The flow-guide die core of the present invention can perform secondary flow separation on lead solution and four secondary flow-separation channels are formed, thereby enabling wires and cables to be uniformly coated with the lead solution.