diff --git a/source/lmp/plugin/deepmdplugin.cpp b/source/lmp/plugin/deepmdplugin.cpp
index 9bc0b685d2..bda880df88 100644
--- a/source/lmp/plugin/deepmdplugin.cpp
+++ b/source/lmp/plugin/deepmdplugin.cpp
@@ -13,6 +13,7 @@
 #endif
 #include "pair_deepmd.h"
 #include "pair_deepspin.h"
+#include "pair_dpa4spin.h"
 #include "version.h"
 #if LAMMPS_VERSION_NUMBER >= 20220328
 #include "pppm_dplr.h"
@@ -22,6 +23,7 @@ using namespace LAMMPS_NS;
 
 static Pair* pairdeepmd(LAMMPS* lmp) { return new PairDeepMD(lmp); }
 static Pair* pairdeepspin(LAMMPS* lmp) { return new PairDeepSpin(lmp); }
+static Pair* pairdpa4spin(LAMMPS* lmp) { return new PairDPA4Spin(lmp); }
 
 #ifdef LMP_KOKKOS
 // Runtime plugins do not consume the PairStyle declarations used by LAMMPS'
@@ -109,6 +111,13 @@ extern "C" void lammpsplugin_init(void* lmp, void* handle, void* regfunc) {
   plugin.handle = handle;
   (*register_plugin)(&plugin, lmp);
 
+  plugin.style = "pair";
+  plugin.name = "dpa4spin";
+  plugin.info = "dpa4spin pair style " STR_GIT_SUMM;
+  plugin.author = "Tiancheng Li";
+  plugin.creator.v1 = (lammpsplugin_factory1*)&pairdpa4spin;
+  (*register_plugin)(&plugin, lmp);
+
   plugin.style = "compute";
   plugin.name = "deeptensor/atom";
   plugin.info = "compute deeptensor/atom " STR_GIT_SUMM;
diff --git a/source/lmp/tests/test_lammps_dpa4spin_registration.py b/source/lmp/tests/test_lammps_dpa4spin_registration.py
new file mode 100644
index 0000000000..3e44940dfb
--- /dev/null
+++ b/source/lmp/tests/test_lammps_dpa4spin_registration.py
@@ -0,0 +1,26 @@
+# SPDX-License-Identifier: LGPL-3.0-or-later
+"""Native-spin host registration does not require a model artifact."""
+
+import os
+
+import pytest
+from lammps import (
+    lammps,
+)
+
+
+def test_native_spin_host_style_is_registered() -> None:
+    """The runtime plugin, rather than the host binary, must expose dpa4spin."""
+    plugin = os.environ.get("DEEPMD_TEST_PLUGIN")
+    if not plugin:
+        pytest.skip("DEEPMD_TEST_PLUGIN is required to validate plugin registration")
+
+    lmp = lammps(cmdargs=["-log", "none", "-screen", "none"])
+    try:
+        assert not lmp.has_style("pair", "dpa4spin"), (
+            "host LAMMPS already provides dpa4spin; plugin provenance is ambiguous"
+        )
+        lmp.command(f"plugin load {plugin}")
+        assert lmp.has_style("pair", "dpa4spin")
+    finally:
+        lmp.close()