Abstract: The Atomic Mass Evaluation (AME) serves as a comprehensive source that collects and evaluates all experimental data related to atomic mass, including different techniques such as mass spectrometry, decay, and nuclear reactions. It is widely recognized as an authoritative and reliable repository of atomic masses in the world. In recent years, advancements in mass measurement technologies have significantly enhanced measurement precision, expanded the measurable range of nuclei, and unveiled new phenomena within exotic atomic nuclei. High-precision mass data provide indispensable references for fundamental nuclear physics research such as nuclear structure, nuclear reactions, and nuclear astrophysics. This article provides an overview of the latest Atomic Mass Evaluation, AME2020, and examines the accuracy of current major mass-measurements devices, and illustrates important experimental results. The release of AME2020 has profound practical implications for a wide range of scientific research and technological applications.