1. A badminton racket , comprising: a frame ; a grip , comprising: a gripping portion having a front end ; a sleeved portion connected to the front end of the gripping portion , the sleeved portion having a first top surface and a first opening , the first opening being located on the first top surface , the interior of the gripping portion and the sleeved portion communicating with each other to form a hollow structure; and a fastening element connected to the first top surface and extending from the first opening to the interior of the gripping portion ; a cap sleeved on the sleeved portion of the grip , the cap having a second top surface and a second opening , the second opening being located on the second top surface (31; and a shaft , one end of the shaft being connected to the frame , the other end being inserted into the fastening element through the second opening and the first opening sequentially, characterized in that , the first top surface and the second top surface having a spacing length (S2) therebetween, the cap having a cap length (C2), and the ratio of the spacing length (S2) to the cap length (C2) being between 0.39 and 0.83. a frame ; a grip , comprising: a gripping portion having a front end ; a sleeved portion connected to the front end of the gripping portion , the sleeved portion having a first top surface and a first opening , the first opening being located on the first top surface , the interior of the gripping portion and the sleeved portion communicating with each other to form a hollow structure; and a fastening element connected to the first top surface and extending from the first opening to the interior of the gripping portion ; a cap sleeved on the sleeved portion of the grip , the cap having a second top surface and a second opening , the second opening being located on the second top surface (31; and a shaft , one end of the shaft being connected to the frame , the other end being inserted into the fastening element through the second opening and the first opening sequentially, characterized in that , the first top surface and the second top surface having a spacing length (S2) therebetween, the cap having a cap length (C2), and the ratio of the spacing length (S2) to the cap length (C2) being between 0.39 and 0.83. a gripping portion having a front end ; a sleeved portion connected to the front end of the gripping portion , the sleeved portion having a first top surface and a first opening , the first opening being located on the first top surface , the interior of the gripping portion and the sleeved portion communicating with each other to form a hollow structure; and a fastening element connected to the first top surface and extending from the first opening to the interior of the gripping portion ; a cap sleeved on the sleeved portion of the grip , the cap having a second top surface and a second opening , the second opening being located on the second top surface (31; and a shaft , one end of the shaft being connected to the frame , the other end being inserted into the fastening element through the second opening and the first opening sequentially, characterized in that , the first top surface and the second top surface having a spacing length (S2) therebetween, the cap having a cap length (C2), and the ratio of the spacing length (S2) to the cap length (C2) being between 0.39 and 0.83. <EOS>