你添加了第三方源？把apt update的结果完整贴出来

试下这个命令：

apt show apt-utils -a

把结果完整贴出来。

检查better-dde源/etc/apt/sources.list.d/better-dde.list内容是否正确：

deb https://better-dde.github.io/ppa/ ./

参考：https://bbs.deepin.org/post/237746

Package: apt-utils
Version: 2.5.1
Priority: important
Section: admin
Source: apt
Maintainer: APT Development Team
Installed-Size: 1,167 kB
Depends: apt (= 2.5.1), libapt-pkg6.0 (>= 2.5.1), libc6 (>= 2.14), libdb5.3, libgcc1 (>= 1:3.0), libstdc++6 (>= 5.2)
Download-Size: 435 kB
APT-Sources: https://better-dde.github.io/ppa ./ Packages
Description: package management related utility programs
This package contains some less used commandline utilities related
to package management with APT.
.

• apt-extracttemplates is used by debconf to prompt for configuration
  questions before installation.
• apt-ftparchive is used to create Packages and other index files
  needed to publish an archive of Debian packages
• apt-sortpkgs is a Packages/Sources file normalizer.

Package: apt-utils
Version: 1.8.2.11-1+dde
Priority: important
Section: admin
Source: apt
Maintainer: APT Development Team
Installed-Size: 1,158 kB
Depends: apt (= 1.8.2.11-1+dde), libapt-inst2.0 (>= 1.0.5), libapt-pkg5.0 (>= 1.3~rc2), libc6 (>= 2.14), libdb5.3, libgcc1 (>= 1:3.0), libstdc++6 (>= 5.2)
Download-Size: 421 kB
APT-Manual-Installed: yes
APT-Sources: https://community-packages.deepin.com/deepin apricot/main amd64 Packages
Description: package management related utility programs
This package contains some less used commandline utilities related
to package management with APT.
.

• apt-extracttemplates is used by debconf to prompt for configuration
  questions before installation.
• apt-ftparchive is used to create Packages and other index files
  needed to publish an archive of Debian packages
• apt-sortpkgs is a Packages/Sources file normalizer.

Package: apt-utils
Version: 1.8.2.8-1+dde
Priority: important
Section: admin
Source: apt
Maintainer: APT Development Team
Installed-Size: 1,154 kB
Depends: apt (= 1.8.2.8-1+dde), libapt-inst2.0 (>= 1.0.5), libapt-pkg5.0 (>= 1.3~rc2), libc6 (>= 2.14), libdb5.3, libgcc1 (>= 1:3.0), libstdc++6 (>= 5.2)
Download-Size: 417 kB
APT-Sources: https://community-packages.deepin.com/deepin apricot/main amd64 Packages
Description: package management related utility programs
This package contains some less used commandline utilities related
to package management with APT.
.

• apt-extracttemplates is used by debconf to prompt for configuration
  questions before installation.
• apt-ftparchive is used to create Packages and other index files
  needed to publish an archive of Debian packages
• apt-sortpkgs is a Packages/Sources file normalizer.

better-dde源的问题，可以去better-dde的帖子下面问一下。