The invention provides a sealing method of a cabinet. The cabinet comprises a cabinet top board (1), a cabinet body side board (2), a cabinet bottom board (3), a cabinet back board (4), a cabinet door upper guard board (5), a cabinet door central post guard board (6), a cabinet door board (7), a sealing strip (8), a
sealant or a
sealant stick (9), etc. When assembling the cabinet body, the
sealant or the sealant stick (9) is first applied to the
assembly joints of cabinet boards, and then the cabinet body is assembled; when mounting the cabinet door board (7), the sealant strip (8) is mounted at the position where the front side of the cabinet body is contacted with the cabinet door board (7), and then the cabinet door board is mounted; or the sealant strip (8) is mounted at the brim of the cabinet door board instead of the position at which the front side of the cabinet body is contacted with the cabinet door board (7), which causes the cabinet door to be in
tight junction with the cabinet body by the sealant (8). For the purpose of beauty of the cabinet body and avoiding
exposure of the sealant or the sealant stick (9), when
machining the cabinet board, a mounting groove for mounting the sealant or the sealant stick (9) can be reserved at the connecting part of cabinet boards, and the sealant can be directly mounting or a mounting groove is provided for the cabinet body or the cabinet door. The sealing method of the invention has the advantages that neither the material, design and
machining mode of the cabinet body need great change or adjustment, nor the application method of a
user needs change, sealing is realized by adding simple processes at low cost, and the sealing problem of the cabinet body under common demand is solved.