Droughts　have　posed　large　threats　to　crop　growth　and　economic　development　in　the　crucial　grain-producing　region,　such　as　the　North　China　Plain　(Huang-Huai-Hai　Plain).　It　is　crucial　to　fully　understand　the　drought　characteristics　for　national　food　security.　Previous　studies　have　relied　primarily　on　the　single　drought　index　rather　than　the　multiple　drought　indices.　The　single　drought　index　makes　it　relatively　difficult　to　provide　comprehensive　and　consistent　information,　compared　with　the　multiple　drought　indices.　However,　drought　monitoring　often　varies　significantly,　because　the　multiple　factors　are　considered　by　different　drought　indices.　In　this　study,　four　drought　indices　were　utilized　to　evaluate　the　spatiotemporal　variation　of　drought　in　the　Huang-Huai-Hai　Plain　from　1970　to　2020.　These　indices　included　the　standardized　precipitation　index　(SPI),　standardized　precipitation　evapotranspiration　index　(SPEI),　self-calibrating　Palmer　drought　severity　index　(scPDSI),　and　aridity　index　(AI).　Drought　events　were　fully　examined　from　four　aspects:　intensity,　area　ratio,　frequency,　and　duration　of　drought.　Data　resources　were　obtained　from　564　meteorological　stations　in　the　National　Meteorological　Information　Center,　including　the　average,　minimum,　and　maximum　temperature,　precipitation,　wind　speed,　relative　humidity,　and　sunshine　hours.　The　effective　soil　water　content　was　collected　from　the　Chinese　soil　dataset　using　the　World　Soil　Database　provided　by　the　National　Tibetan　Plateau　Research　Center.　The　research　results　indicate　that　the　better　consistency　of　four　drought　indices　was　achieved　to　characterize　the　drought　intensity　and　area.　The　overall　drought　intensity　shared　a　decreasing　trend　from　1970　to　2020.　The　downward　trend　was　ranked　in　the　order　of　the　SPI　©　2023　Chinese　Society　of　Agricultural　Engineering.　All　rights　reserved.