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A gas-diffusion micropipette electrode used as scanning electrochemical microscopy tip was fabricated via a series of consecutive processes roughly including pulling micropipette,coating conductive layer,insulting surface,and exposing conductive ring-tip.Compared to the ring-tip for droplet dispensation reported before,the asfabricated micropipette tip has a larger ring size (c.a.25 um diameter) that is beneficial to gas dispensation and is more sensitive to electroactive species.This micropipette gold-ring tip was characterized by optical and electrochemical methods,and the eligibility of insulation of the outside wall and exposure of the gold-ring end was confirmed.The gas-diffusion micropipette electrode functioned as both a normal SECM tip and a gas dispenser was demonstrated by imaging FcMeOH+ / FcMeOH reaction and electrocatalytic oxygen reduction reaction,respectively.