Objective:　To　investigate　the　feasibility　of　magnetoencephalography　(MEG)　imaging　in　localizing　sensory　motor　cortex　for　brain　tumor　surgery.　Methods:　There　were　36　patients　with　brain　tumors　in　this　study　including　19　with　meningomas,　14　gliomas,　2　metastases,　and　1　cavernous　angioma.　All　patients　underwent　MEG　and　magnetic　resonance　imaging　before　surgery.　These　individualized　functional　brain　maps　were　integrated　into　a　neuronavigation　system　for　intraoperative　analysis.　Presurgical　mapping　of　somatosensory　and/or　motor　cortex　was　performed　and　sites　were　compared　before　and　after　surgery.　Results:　MEG　demonstrated　that　the　tumor　lesion　expected　sensory　motor　cortex　location　in　various　degrees　of　displacement　and　desformation　for　the　36　patients.　Brain　tumors　were　resected　completely　in　34　cases.　After　surgery,　neurological　deficits　fully　recovered　in　19　cases,　unchanged　in　15　cases,　and　deteriorated　in　2　cases.　Conclusions:　MEG　was　found　to　be　practical　and　useful　in　localizing　sensory　motor　cortex　and　brain　tumor.　It　is　a　valuable　noninvasive　method　for　presurgical　planning　in　the　treatment　of　brain　tumors.