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The negative results at the Large Hadron Collider imply that the scale of new physics is higher than TeV scale. If it is the case, it is preferable to have a mechanism to explain the hierarchy between the new scale and the electroweak scale. The relaxionmechanism, proposed by P. W. Graham, D. E. Kaplan, and S. Rajendran, is a dynamical solution to the hierarchy problem. We point out that the tunneling phase of the relaxation requires a huge number of e-folds of inflation and could cause fine-tuning problems in inflation sector. We found a new mechanism similar to theirs, which overcomes the problem, is realized in a more generic setup, and enhances the testability at colliders.