Biochip　plays　more　and　more　important　roles　in　medical　analysis　and　test.　There　is　a　need　to　enhance　the　effectiveness　of　biochip　inspection.　As　the　biochip　inspected　is　based　on　linear-arrayed　electrode,　an　inspection　algorithm　was　developed.　At　first,　the　image　was　segmented　into　sub　images　according　to　the　linear　character,　and　then　the　sub　image　was　segmented　into　subpatterns,　at　last　the　subpattens　were　inspected　by　nonreferential　method.　Experimental　results　demonstrated　the　effectiveness　of　the　algorithm,　which　could　improve　the　speed　and　the　accuracy　of　the　inspection.