The Chinese northwest region of ground in the Urumqi City， regularly dry and little rain， the natural condition is extremely bad， therefore， research's ecosystem's safe problem of this region is extremely The writer carries on through 15 factors with safe ecosystem of the SAS covariance software's Urumqi to 1990-2004 years City analytical， studied into the ecosystem safe circumstance and regulation of 15 in the last years Urumqi Cities， and give the relativity of several factor and each ecosystem factor and ecosystem safeties which mainly influence the safe circumstance of ecosystem in Urumqi City analyze， putting forward future for several years， Urumqi City ecosystem safety of variety circumstance and aim at analysis and viable solution of[with] ecosystem
