Disclosed herein are a cone valve and a manufacturing method thereof, wherein a cone which is installed inside a hollow body unit through which fluid flows, wherein the body unit is provided with left and right bodies, and the cone is disposed between the left and right bodies, left and right valve inclination surfaces are defined, inclined corresponding to an inclination surface of the cone, at the front ends of the left and right bodies, whereupon the cone can reciprocate forward and backward, thus opening or closing a flow passage.