To provide a road sign pole superior in visibility at night even when there is no light source such as a light; and its manufacturing method.

This road sign pole 10 is composed of an outer cylinder member 12 composed of thermoplastic elastomer, a fixing column member 14 erected outside a lower part from the inside of the outer cylinder member 12, a coil spring 16 arranged in an inside end part of the outer cylinder member 12 of the fixing column member 14, and a polyurethane foaming body 18 filled inside the outer cylinder member 12. The road sign pole 10 is formed so that a top part of the outer cylinder member 10 has a diametrally contracted opening part 22, and a solar battery 41 is installed in the opening part, and an LED 26 with the solar battery 41 as a power source is installed in a plurality in the peripheral direction on a side surface in the vicinity of the top part of the outer cylinder member 12.