In　order　to　obtain　external　information　and　ensure　the　security　of　human-computer　interaction,　a　double　sensitive　layer　structured　tactile　sensor　was　proposed　in　this　paper.　Based　on　the　EIT　(Electrical　Impedance　Tomography)　method,　the　sensor　converts　the　information　from　external　collisions　or　contact　into　local　conductivity　changes,　and　realizes　the　detection　of　one　or　more　contact　points.　These　changes　can　be　processed　into　an　image　containing　positional　and　force　information.　The　experiments　were　conducted　on　the　actual　sensor　sample.　The　OpenCV　toolkit　was　used　to　process　the　positional　information　of　contact　points.　The　distributional　regularities　of　errors　in　positional　detection　were　analyzed,　and　the　accuracy　of　the　positional　detection　was　evaluated.　The　effectiveness,　sensitivity,　and　contact　area　of　the　force　detection　were　analyzed　based　on　the　result　of　the　EIT　calculations.　Furthermore,　multi-object　tests　of　pressure　were　conducted.　The　results　of　the　experiment　indicated　that　the　proposed　sensor　performed　well　in　detecting　the　position　and　force　of　contact.　It　is　suitable　for　human-robot　interaction.