Provided by the present disclosure are a liquid crystal antenna unit and a liquid crystal phased array antenna. The liquid crystal antenna unit comprises: a first substrate; a second substrate which is arranged opposite to the first substrate; a liquid crystal layer which is disposed between the first substrate and the second substrate; a transmission line which is located on a first surface and which is arranged to extend along the first surface in a first direction; a first antenna oscillator which is located on the first surface and which is arranged into an elongated dipole that extends along the first surface in a second direction; a second antenna oscillator which is located at a position on a surface of the second substrate facing away from the first substrate that corresponds to the first antenna oscillator; and a ground electrode which is located on a surface of the first substrate facing away from the second substrate.