Background:　A　COVID-19　outbreak　in　the　rural　areas　of　Shijiazhuang　City　was　attributed　to　the　complex　interactions　among　vaccination,　host,　and　non-pharmaceutical　interventions　(NPIs).　Herein,　we　investigated　the　epidemiological　characteristics　of　all　reported　symp-tomatic　cases　by　picking　Shijiazhuang　City,　Hebei　Province　in　Northern　China　as　research　objective.　In　addition,　we　established　a　with　age-group　mathematical　model　to　perform　the　optimal　fitting　and　to　investigate　the　dynamical　profiles　under　three　scenarios.　Methods:　All　reported　symptomatic　cases　of　Shijiazhuang　epidemic　(January　2-February　3,　2021)　were　investigated　in　our　study.　The　cases　were　classified　by　gender,　age　group　and　location,　the　distributions　were　analyzed　by　epidemiological　characteristics.　Furthermore,　the　reported　data　from　Health　Commission　of　Hebei　Province　was　also　analyzed　by　using　an　age-group　mathematical　model　by　two　phases　and　three　scenarios.Results:　Shijiazhuang　epidemic　caused　by　SARS-CoV-2　wild　strain　was　recorded　with　the　peak　84　cases　out　of　868　reported　symptomatic　cases　on　January　11,　2021,　which　was　implemented　with　strong　NPIs　by　local　government　and　referred　as　baseline　situation　in　this　study.　The　research　results　showed　that　R0　under　baseline　situation　ranged　from　4.47　to　7.72,　and　Rt　of　Gaocheng　Distinct　took　3.72　with　95%　confidence　interval　from　3.23　to　4.35　on　January　9,　the　declining　tendencies　of　Rt　under　baseline　situation　were　kept　till　February　3,　the　value　of　Rt　reached　below　1　on　January　19　and　remained　low　value　up　to　February　3　for　Gaocheng　District　and　Shijiazhuang　City　during　Shijiazhuang　epidemic.　This　indicated　Shijiazhuang　epidemic　was　under　control　on　January　19.　However,　if　the　strong　NPIs　were　kept,　but　remote　isolation　operated　on　January　11　was　not　implemented　as　of　February　9,　then　the　scale　of　Shijiazhuang　epidemic　reached　9482　cases　from　age　group　who　were　60　years　old　and　over　out　of　31,017　symptomatic　cases.　The　investigation　also　revealed　that　Shijiazhuang　epidemic　reached　132,648　symptomatic　cases　for　age　group　who　were　60　years　old　and　over　(short　for　G2)　under　risk-based　strategies　(Scenario　A),　58,048　symptomatic　cases　for　G2　under　late　quarantine　strategies　(Scenario　B)　and　207,124　symptomatic　cases　for　G2　under　late　quarantine　double　risk　strategies　(Scenario　C),　and　that　the　corresponding　transmission　tendencies　of　Rt　for　three　scenarios　were　consistently　controlled　on　Jan　29,　2021.　Compared　with　baseline　situation,　the　dates　for　controlling　Rt　below　1　under　three　scenarios　were　delayed　10　days.Conclusions:　Shijiazhuang　epidemic　was　the　first　COVID-19　outbreak　in　the　rural　areas　in　Hebei　Province　of　Northern　China.　The　targeted　interventions　adopted　in　early　2021　were　effective　to　halt　the　transmission　due　to　the　implementation　of　a　strict　and　village-wide　closure.　However　we　found　that　age　group　profile　and　NPIs　played　critical　rules　to　suc-cessfully　contain　Shijiazhuang　epidemic,　which　should　be　considered　by　public　health　policies　in　rural　areas　of　mainland　China　during　the　dynamic　zero-COVID　policy.(c)　2023　The　Authors.　Publishing　services　by　Elsevier　B.V.　on　behalf　of　KeAi　Communications　Co.　Ltd.　This　is　an　open　access　article　under　the　CC　BY-NC-ND　license　(http://creativecommons.org/licenses/by-nc-nd/4.0/).