In　this　study,　fully　dense　tungsten　samples　were　additively　manufactured　and　the　micro-structure　behavior　was　studied.　A　crack　network　with　a　spacing　of　20　mu　m　up　to　100　mu　m　was　found　in　the　designed　samples.　It　was　noticed　that　the　laser　scanning　approach,　which　could　customize　the　microstructure,　affected　the　crack　behavior　in　manufactured　tungsten[1].Different　additive　parameters　were　adopted　to　study　the　microstructure　properties,　but　it　was　revealed　that　cracking　is　practically　irresistible　in　AM　(additive　manufacturing),It　might　be　achieved　that　cracking　chain　assembled　because　the　cracks　appeared　in　each　laser　fused　path　and　then　analogous　in　the　surface-by-surface　structure　course.