The invention discloses an electric automobile front side member assembly with a threaded casing pipe structure. A front side member (2) made of an aluminum profile is arranged in a front cabin. Front cabin supports (1) are installed on the front side member (2) through front cabin support installation structures (4). By the adoption of the above technical scheme, a DC/DC converter, a storage battery and the like in the front cabin can be installed and fixed more stably and reliably and are unlikely to be loosened; and the connecting structure is reasonable and compact, and installation and fixing are convenient.