diff --git a/BUILD.gn b/BUILD.gn
deleted file mode 100644
index 796d546ca32547f21b2ea1d78ae2dad6595aa8bd..0000000000000000000000000000000000000000
--- a/BUILD.gn
+++ /dev/null
@@ -1,53 +0,0 @@
-# Copyright (c) Huawei Technologies Co., Ltd. 2019-2019. All rights reserved.
-
-import("//build/harmonyos.gni")
-
-harmonyos_source_set("png_static") {
-  sources = [
-    "//third_party/libpng/png.c",
-    "//third_party/libpng/pngerror.c",
-    "//third_party/libpng/pngget.c",
-    "//third_party/libpng/pngmem.c",
-    "//third_party/libpng/pngpread.c",
-    "//third_party/libpng/pngread.c",
-    "//third_party/libpng/pngrio.c",
-    "//third_party/libpng/pngrtran.c",
-    "//third_party/libpng/pngrutil.c",
-    "//third_party/libpng/pngset.c",
-    "//third_party/libpng/pngtrans.c",
-    "//third_party/libpng/pngwio.c",
-    "//third_party/libpng/pngwrite.c",
-    "//third_party/libpng/pngwtran.c",
-    "//third_party/libpng/pngwutil.c",
-    "//third_party/libpng/arm/arm_init.c",
-    "//third_party/libpng/arm/filter_neon.S",
-    "//third_party/libpng/arm/filter_neon_intrinsics.c",
-    "//third_party/libpng/arm/palette_neon_intrinsics.c",
-  ]
-  include_dirs = [
-    "//third_party/libpng",
-    "//third_party/zlib",
-    "//third_party/libpng/contrib/gregbook",
-    "//third_party/libpng/contrib/pngminim/decoder",
-    "//third_party/libpng/contrib/pngminim/encoder",
-    "//third_party/libpng/contrib/pngminim/preader",
-    "//third_party/libpng/contrib/tools",
-    "//third_party/libpng/contrib/visupng",
-    "//third_party/libpng/contrib/libtests",
-  ]
-  cflags = [
-    "-DPNG_NO_USE_READ_MACROS",
-    "-DPNGLIB_LIBNAME=\"PNG16_0\"",
-    "-DPNGLIB_VERSION=\"1.6.37\"",
-  ]
-  deps = [
-      "//third_party/zlib:libz"
-  ]
-}
-
-harmonyos_shared_library("libpng") {
-  deps = [
-    ":png_static",
-  ]
-  subsystem_name = "common"
-}