The small-sized wildcats, including Asiatic Wildcat, Desert and Pallas’ Cat and Eurasian Lynx regarded as ‘Least concerned” as in first to as ‘Vulnerable' and following ‘Endangered’ and then ‘Critically endangered’ species as final and originally concentrative distribute in Xinjiang different zones in northwest China. This book provides comprehensive information on bio-morphology, habitat selectivity, environmental condition, habit, prey-feed source, every item of composition, relationship among Wild Cat and domestic cat at presence investigated in 2004-2006 and 2011-2013 as study. On booklet also illustrated some dynamical statistics of wildcat’ pelt collection by national trade from three prefectures in last 40 years. The results indicate that large scale and continuous open-up land for cotton in unplanned, exploit petroleum. natural gas, misapply water and destroy desert vegetation, poaching and killing prey objectives, etc., of them long-term effects on plants functional density and qualities of the cat surviving habitat and productivity, whereas pressures of increasing human population to fragile arid ecosystem showed that efficiency and desirable effects of the cat surviving.