The present invention provides a terminal antenna and a terminal. The terminal antenna includes a mainboard, a feedpoint disposed on the mainboard, a metal housing, an adjustable apparatus, and at least two adjustable ground points. The mainboard is located on an inner side of the metal housing, the metal housing is electrically connected to the mainboard, and a slot is disposed in the metal housing. The feedpoint and the at least two adjustable ground points each are disposed on a part of the mainboard facing the slot. The at least two adjustable ground points each are electrically connected to the mainboard by using the adjustable apparatus, and the adjustable apparatus is configured to control whether each adjustable ground point is grounded. In embodiments of the present invention, the adjustable apparatus controls whether each adjustable ground point is grounded, so that signals with a same frequency can be radiated from a first end and a second end of the slot of the terminal antenna. This avoids a prior-art problem of low efficiency of a terminal antenna caused because a low-frequency signal or a high-frequency signal radiated by the terminal antenna is rapidly attenuated when a slot in a metal housing is covered by a hand.