[Problem] To provide a moisture meter which easily enables the measurement of the moisture content of a human subject and, therefore, is efficient as an aid to appropriately control the moisture content of the subject.[Solution] A moisture meter (1) comprises a moisture measurement part (30) which is to be held under the armpit (R) of a human subject (M) and by which the moisture content in the armpit (R) is measured to thereby determine the moisture content of the subject (M). The moisture measurement part (30) is provided with a round covering member (34), which is a mesh-shaped member and, when held under the armpit (R), allows the permeation of vapor, i.e., the moisture in the armpit (R), and a humidity sensor (33) which is provided within the round covering member (34) and brought into contact with the vapor. The moisture meter (1) comprises a body part (10), a measurement part holder (12) holding the moisture measurement part (30) and a body temperature measurement part (31), said measurement part holder being to be held under the armpit (R), and a display holder (12) holding a display (20), said display indicating the moisture content of the subject (M) thus measured and the body temperature of the subject (M) thus measured.Linvention vise à proposer un humidimètre qui permet facilement la mesure de la teneur en humidité dun sujet humain et, par conséquent, est efficace en tant quaide pour réguler de manière appropriée la teneur en humidité du sujet. A cet effet, linvention porte sur un humidimètre (1) comprenant une partie de mesure dhumidité (30) qui doit être maintenue sous laisselle (R) dun sujet humain (M) et au moyen de laquelle la teneur en humidité dans laisselle (R) est mesurée pour permettre ainsi de déterminer la teneur en humidité du sujet (M). La partie de mesure dhumidité (30) comporte un élément de couverture arrondi (34), qui est un élément en forme de maille et, lorsquil est maintenu sous laisselle (R), permet la pénétration de vapeur, cest-à
