In modern medical technology, advances in materials science have brought unprecedented hope to patients. Heat-resistant metals, as a class of materials capable of maintaining stable properties in extreme environments, not only shine in the aerospace and energy sectors, but also play an important role in the medical industry. In particular, cobalt-chromium-molybdenum alloy (CoCrMo alloy) has become the material of choice for the manufacture of artificial joints due to its excellent mechanical properties and biocompatibility. In this paper, we will delve into the properties and applications of cobalt-chromium-molybdenum alloys and their significance in the medical field.