PURPOSE: To make it possible to house a sitting seat consisting of packaged medical plants or a material obtained by laminating a ceramic material and Japanese cypress material by forming a medical plant housing part of a leg seat and a height adjusting seat, forming socket and spigot engaging parts consisting of ruggedness, etc., at the leg seat, the height adjusting seat and the sitting seat and boring these parts with a suitable number of holes of suitable shapes.

CONSTITUTION: The upper sitting seat 1 is bored with holes in the upper part, is formed with the socket and spigot engaging parts 7 having the ruggedness on the four circumference of the lower part and is bored with a hole of a suitable shape on the front surface. A height adjusting seat 2 of an intermediate part is formed to an approximately box shape so as to meet the socket and spigot engaging parts 7 of the sitting seat. The height is adjusted by the number of uses by preparing the height adjusting seats 2 of various heights. The bottom thereof is also formed with the socket and spigot engaging parts 7 so as to be engaged with the leg seat 3. The side walls and bottom wall are bored with suitable holes. The height adjusting seat 2 is formed to such a shape that the leaves of persimmon trees, sweet-flag leaves, etc., as herb drugs packaged in a net cage or net bag or the sitting seat formed by sticking the ceramic material and the Japanese cypress can be approximately exactly housed into the housing part of the height adjusting seat 2.