Inflation　is　a　permanent　topic　in　macroeconomic　field　and　an　important　issue　related　to　social　and　political　stability.　Managing　inflation　expectations　and　easing　inflationary　pressures　is　also　an　important　problem　that　macro-economy　suffering　in　China　recent　years.　Therefore,　it　is　more　critical　to　explore　the　internal　operation　mechanism　of　inflation　to　forecast　and　control　it　in　essence.　Thus,　based　on　system　science　finance　theory,　we　use　methods　of　correlation　dimension　and　largest　lyapunov　exponent　to　examine　the　chaotic　characteristic　of　inflation　in　China.　The　results　show　that　the　inflation　system　in　China　is　chaotic,　there　are　about　two　factors　determining　its　operation,　which　reflects　the　complex　operation　mechanism　of　price　in　commodity　markets;　the　predictable　time　of　inflation　fluctuation　tendency　is　approximately　11.29　months.