The utility model discloses an automobile -used adjustable knuckle, it includes knuckle body and knuckle annex, first connecting portion have set firmly on the knuckle body, set firmly the second connecting portion of being connected with first connecting portion on the knuckle annex and be used for to dismantle the steering linkage connecting portion of being connected with steering linkage, wherein, can be around the relative relative position of fixed connection after the rotation that rotate of an axis between second connecting portion and the first connecting portion. Additionally, the utility model provides an use the suspension structure of above -mentioned automobile -used adjustable knuckle. Will the utility model discloses a suspension structure is applied to to automobile -used adjustable knuckle, and the knuckle annex can be dismantled with steering linkage and be connected, just can conveniently change steering linkage's installation hard spot position through the first connecting portion on the knuckle body and the relative rotation between the second connecting portion on the knuckle annex and fixed connection to the realization changes steering characteristic's purpose on the real vehicle, improve the stability of auttombilism, effectively avoids wheel hub interval.