Rotational spectra of the symmetric top molecule CF3CCD have been measured in its vibrational ground states. Analysis of the vibrational ground - state spectra gave the following rotational parameters such as B0=2696.06753 MHz, DJ=0. 22759 kHz, DJk=6.1748 kHz. The HJk =16.1 mHz and HkJ=- 0.24.3 mHz were determined for the first time. Contribution of individual constants to frequency has been discussed.