The present invention relates to a sauna, and more particularly, to a sauna having an improved structure capable of stably enjoying a sauna through an improved structure. In the present invention, A sauna basic body (10) having an accommodating portion (11) opened upward and an opening (12) formed to open laterally on one side and communicating with the accommodating portion (11)； A stationary lid (20) for closing the upper front of the accommodating portion (11) of the sauna basic body (11)； A sliding portion 31 slidably installed on the sauna basic body 10 so as to be slidably inserted into and removed from the lower portion of the fixed cover 20 and a sliding portion 31 formed on one side of the sliding portion 31, A moving lid (30) having a rotation part (32) installed to be vertically rotatable and opening / closing the rear upper portion of the receiving part (11) of the sauna basic body (10)； And a door (40) rotatably installed on the sauna basic body (10) and opening and closing the opening (12) of the sauna basic body (10) A first hinge 51 provided on one side of the sliding part 31 of the moving lid 30 and a second hinge 52 provided on one side of the rotating part 32 of the moving lid 30, The other end of the second hinge 52 is provided on the first hinge 51 and is rotatably installed on the sliding portion 31 of the moving lid 30 through the first hinge 51, And a hinge member (50) having a connecting member (53) rotatably mounted on the rotating portion (32) of the moving lid (30) via a hinge (52). The present invention has a hinge member 50 of a double hinge structure in which the rotating portion 32 of the moving lid 30 is positioned so as to be parallel to the sliding portion 31 of the moving lid 30, There is an advantage that it is possible to prevent breakage of the moving lid 30 by the user when entering and exiting. Also, the saunas according to the present invention have an advantage that the saunas can be safely used by the user because the user
