The present invention provides a
solid bath additive containing tangible materials that can be manufactured efficiently while minimizing stress on the tangible materials placed inside, and a method for manufacturing the same. [Solution] The device comprises first and second
solid parts 12(1) and 12(2), which are pressure-molded bodies of aggregates of granular bath additive raw materials 16, and a
tangible object 14 housed within the first and second
solid parts 12(1) and 12(2). The first and second solid parts 12(1) and 12(2) each have flat joining surfaces 12a(1) and 12(2), and recesses 12b(1) and 12b(2) provided in the inner regions of the joining surfaces 12a(1) and 12a(2). In the assembled state, the joining surfaces 12a(1) and 12a(2) abut each other and are joined together via an
adhesive 18, and the recesses 12b(1) and 12b(2) face each other to form a housing space 20, in which the
tangible object 14 is housed.