  Results of measurements of the longitudinal magnetic field in a hot accretion
spot in three classical T Tauri stars (CTTS) are presented. The magnetic field
in the formation region of the narrow component of the emission line HeI 5876
{\AA} was found for each star in our sample at a level of more than 2\sigma. In
case of DS Tau we have found the field in the narrow components of NaI D lines,
which was equal to +0.8 \pm 0.3 kG, i.e. it was equal to the field measured on
the narrow component of HeI 5876 \AA. Our results indicate that the magnetic
field in the hot spots can be studied for CTTS down to 13^m that allow in the
future to double a number of CTTS with measured field in the accretion zone.
