In　corrosive　environment,　the　hardness　along　the　depth　direction　and　crack　propagation　direction　of　specimen　is　affected　by　hydrogen　concentration　and　stress.　In　this　paper,　micro-hardness　tester　was　employed　to　quantitatively　evaluate　the　hydrogen　distribution　in　metals.　Hydrogen　saturated　value　and　hydrogen　saturated　layer　of　specimens　were　obtained.　The　experimental　results　demonstrated　that　hydrogen　concentration　behavior　in　a　known　equibiaxial　stress　environment　can　be　verified　experimentally　using　micro-hardness　technique.　There　is　a　simple　additive　relationship　between　the　hydrogen-induced　micro-hardness　increment　and　the　stress-induced　micro-hardness　increment　in　Vickers　micro-hardness　measurement.　The　hydrogen　distribution　of　specimens　was　analyzed　by　taking　the　change　of　the　micro-hardness　increment　along　the　depth　direction　and　crack　propagation　direction　of　specimens　as　the　indicator.　©　Published　under　licence　by　IOP　Publishing　Ltd.