Fujian　Tulou　is　a　significant　part　of　the　international　built　heritage.　Renovation　and　strengthening　of　existing　Haka　Tulou＇s　earth　constructions　can　ensure　a　better　quality　of　life　for　their　residents,　as　well　as　contribute　to　a　long-lasting　prominence　of　China＇s　heritage.　Previous　studies　of　Fujian　Tulou　mainly　cover　habitation　patterns,　construction　features　and　architectural　details.　In　this　research　a　layout　has　been　summarized　of　causes　of　deterioration,　pathology　of　structure,　focused　on　the　buildings＇　conservation　value　and　restoration,　in　terms　of　history,　culture　and　construction　technologies.　Out　of　Fujian＇s　more　than　3,000　Tulou,　only　a　few　dozen　have　been　awarded　the　status　of　World　Heritage　Sites　by　UNESCO.　Along　with　that　status,　the　46　buildings　chosen　for　the　award.　The　buildings　which　belong　to　UNESCO＇s　heritage　are　on　list　of　possible　restoration　while　the　rest　remain　in　disintegration　and　the　villages　are　getting　vacant　through　years.　The　answer　for　the　restoration　could　be　found　through　participation　and　team　work　of　experts　and　habitants.　A　Tulou　is　usually　inhabited　by　one　family　clan　for　several　generations,　and　the　enclosed　structure　allows　to　the　members　of　the　community　to　work　together　and　participate　in　a　common　goal.Therefore,　it　is　necessary　to　find　new　intervention　techniques　for　these　earthen　buildings,　or　to　adapt　those　already　existing　-　and　proved　-　to　the　specific　characteristics　of　the　material.　This　is　the　context　in　which　the　present　research　aims　at　contributing　to　the　development　of　grouting　and　stitching　the　cracks　by　means　of　earthen　mortar　in　rammed　earth　walls,　as　collective　restoration　techniques.　©　2020　The　Authors.