Hybrid　DC　circuit　breaker　(HDCCB)　has　the　advantages　of　low　on-state　loss　and　fast　breaking　speed,　so　it　is　an　important　development　direction　in　the　field　of　DC　breaking.　The　integrated　gate　commutated　thyristor　(IGCT)　has　the　advantages　of　low　on-state　voltage,　fast　turn-off　speed　and　strong　anti-surge　capability,　so　it　is　suitable　for　power　electronic　switch　which　is　the　core　breaking　component　of　the　HDCCB.　In　this　paper,　a　parallel　IGCTs　module　as　the　power　electronic　switch　in　a　HDCCB　is　designed.　The　fundamental　principle　of　current　sharing　of　parallel　IGCTs　is　analyzed.　A　test　platform　is　set　up　to　investigate　the　influencing　factors　of　current　sharing　of　parallel　IGCTs,　including　electrical　characteristics　of　IGCTs,　clamping　force,　current　rise　rate　and　current　amplitude.　Finally,　the　conclusion　of　the　current　sharing　characteristics　of　parallel　IGCTs　under　different　factors　is　obtained　by　tests.　©　2019　IEEE.