The　grid　cells　have　obvious　spatial　firing　characteristics　and　can　form　a　hexagonal　grid　firing　structure.　It　uses　its　own　motion　information　to　encode　space,　and　forms　a　stable　grid　structure　by　integrating　paths.　Grid　cells　are　an　important　part　of　spatial　expression.　Through　spatial　expression,　mammals　can　find　their　way.　Given　a　starting　and　ending　point,　many　animals　are　able　to　navigate　autonomously　without　training,　finding　a　target　point,　and　showing　that　the　hippocampus　plays　a　role.　In　the　process　of　exploring　the　environment　of　rats,　footprints　will　spread　all　over　the　environment,　and　grid　cell　field　will　be　generated.　However,　due　to　errors　in　velocity　estimation　and　inherent　noise　in　neural　calculation,　the　continuous　accumulation　of　errors　will　lead　to　the　instability　of　grid　cell　field.　The　authors　use　the　plasticity　of　Hebbian　to　reconstruct　the　grid　field,　enhance　the　stability　of　the　grid　cell　field,　so　that　mammals　can　locate　and　navigate　more　accurately　in　complex　or　dynamic　environments.　©　2020　Institution　of　Engineering　and　Technology.　All　rights　reserved.