At the beginning of the 21st century, sustainable development began and became the operating platform for all countries worldwide. Since then, sustainable architecture has also appeared with its characteristics and principles to minimize the impact of architectural activities on the natural environment, bringing significant benefits to society. However, the architecture problem for sustainable development has appeared for a long time, typically in three Indochina countries: Vietnam, Laos, and Cambodia. Before becoming a French colony and being enlightened, people relied on nature to build very comfortable residences without exploiting excessive energy to cause consequences such as the destruction of resources, ecological imbalance, and climate change. All of the above are handled wisely by the local people. This article aims to learn about the architectural solutions that the indigenous people use to help adapt to the local climate when they do not have the concept of energy sources, but that is the beginning of sustainable development architecture in Indochina.