In this letter, a method is proposed to generate the near-field focusing beam in microwaves by using the TM-polarized Zeroth-order Inward Cylindrical Traveling Leaky Wave (ZICTLW), whose normal electric-field component is a truncated zeroth-order Hankel function of the first kind. The focusing property of ZICTLW is analyzed. Furthermore, the relation between the focusing property and the truncation region, which is used to remove the singularity, is investigated. In order to generate a focusing beam, a ZICTLW antenna is designed based on a three-layer radial waveguide with both a capacitive sheet and a planar high impedance sheet covered. The simulation and the measurement validate the proposed antenna can generate a focusing zone that can be controlled by the operating frequency.