  Recent ROSAT and ASCA X-ray observations as well as HST images have provided
new insights into the structure and evolution of the 30 Dor nebula. I review
hot gas properties of the nebula and discuss related physical processes. The
structure of the nebula can be understood as outflows of hot and HII gases from
the parent giant molecular cloud of R136. The dynamic mixing between the two
gas phases is likely a key mass loading process of the hot gas, providing a
natural explanation of both temperature and density structure of the nebula.
