Embodiments of the present application provide a vital sign information determination method, and an identity authentication method and apparatus. The vital sign information determination method includes: acquiring first biological feature data collected when an object presses on a biological feature sensor, the first biological feature data being used to reflect a body texture feature of the object； parsing a plurality of pieces of first biological feature data of the object to acquire second biological feature data, the second biological feature data being used to reflect a vital sign of a body of the object； and determining vital sign information of the body of the object according to the second biological feature data.
