The present invention relates to a cap having a variable shade. The present invention has a headband contacting the forehead and having a lock member at both ends, and a hat having a main shading fixed to an upper part of the headband, each having a cutout facing inward from a sidewall and installed in a vertical direction at both sides of the main shading. A first rail; A first auxiliary sunshade inserted into each of the first rails on each of the two sides and having a stepped jaw having a locking jaw thereon, the first auxiliary shading having each of the second rails installed vertically on both sides with a cutout inward from the sidewall; Each of the two sides is inserted into the second rail, characterized in that consisting of a second auxiliary shade formed with a stone jaw having a locking jaw in the upper portion. As a result, it is easy to manufacture and easy to use due to the adoption of a relatively simple configuration, and there is no trouble even when used for a long time, and in particular, the length of the sunshade can be changed by the user as necessary, so that even at varying irradiation angles It effectively blocks UV rays.
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