Based　on　the　needs　of　Named　Entity　Recognition,　this　paper　discusses　the　comparative　experiment　in　the　same　environment　about　HMM　and　MEM.　After　in-depth　analyzing　the　characteristic　and　application　in　named　entity　recognition　of　the　two　models,　merits　and　shortcomings　are　proposed.　As　the　shortcomings　of　existing　models　are　pointed,　the　future　direction　of　further　research　is　explored.　©　2011　IEEE.