This paper deals with the studies on the characteristics of inorganic chemical compositions of the main acridoids and their feeding plants. All the acridoids and relevant plants were collected from the Station of Nei Mongol Steppe Ecosystem, Academia Sinica and its neighbour regions. These acridoids are: Calliptamus abbreviatus, Pararcyptera microptera meridionalis, Myrmeleo-tettix palpalis, Dasyhippus barbipes, Chorthippus dubius,Chorthippus fallax, An-garacris rhodopoda, Angaracris barabensis. The charact...