A toilet brush holder, comprising: a holder body, and a barrel body, wherein the barrel body is movably sleeved with the holder body, and an elastic member is arranged between the holder body and the barrel body, wherein the upper end of the holder body is hinged with barrel covers which are opened and closed along with the up-down movement of the barrel body, wherein the barrel body comprises an inner barrel arranged in the holder body, a portion of the holder body below the barrel covers being provided with a ventilation hole, wherein when the toilet brush is placed in the inner barrel, the barrel body overcomes the elastic force of the elastic member and moves down relative to the holder body, thereby propelling the barrel covers such that they are closed at the upper end of the holder body, wherein the downward movement of the barrel body relative to the holder body allows the inner barrel to be communicated with the exterior of the holder body through the ventilation hole, the barrel body comprising an outer shell covering the exterior of the inner barrel, wherein the holder body comprises a base and a support arranged on the base, wherein the ventilation hole is formed in the upper portion of the support, the barrel covers being hinged to the upper end of the support, and the inner barrel is sleeved in the support, and wherein the support is arranged between the outer shell and the inner barrel, the lower portion of the support being provided with a through hole arranged such when the toilet brush is lifted up, the barrel body moves up relative to the holder body under the elastic force of the spring such that the interior of the holder body is communicated with the exterior through the through hole. a holder body, and a barrel body, wherein the barrel body is movably sleeved with the holder body, and an elastic member is arranged between the holder body and the barrel body, wherein the upper end of the holder body is hinged with barrel covers which are opened and closed along with the up-down movement of the barrel body, wherein the barrel body comprises an inner barrel arranged in the holder body, a portion of the holder body below the barrel covers being provided with a ventilation hole, wherein when the toilet brush is placed in the inner barrel, the barrel body overcomes the elastic force of the elastic member and moves down relative to the holder body, thereby propelling the barrel covers such that they are closed at the upper end of the holder body, wherein the downward movement of the barrel body relative to the holder body allows the inner barrel to be communicated with the exterior of the holder body through the ventilation hole, the barrel body comprising an outer shell covering the exterior of the inner barrel, wherein the holder body comprises a base and a support arranged on the base, wherein the ventilation hole is formed in the upper portion of the support, the barrel covers being hinged to the upper end of the support, and the inner barrel is sleeved in the support, and wherein the support is arranged between the outer shell and the inner barrel, the lower portion of the support being provided with a through hole arranged such when the toilet brush is lifted up, the barrel body moves up relative to the holder body under the elastic force of the spring such that the interior of the holder body is communicated with the exterior through the through hole.