  Medium-resolution $(R\simeq 15000)$ circular spectropolarimetry of T Tauri is
presented. The star was observed twice: on November 11, 1996 and January 22,
2002. Weak circular polarization has been found in photospheric absorption
lines, indicating a mean surface longitudinal magnetic field $B_{\|}$ of
$160\pm 40$ G and $140\pm 50$ G at the epoch of the first and second
observations respectively. While these values are near the detection limit of
our apparatus, we belive that they are real. In any case one can conclude from
our data that $B_{\|}$ of T Tau does not significantly exceed 200 G, which is
much less than surface magnetic field strength of the star ($>2.3$ kG) found by
Guenther et al. (1999) and Johns-Krull et al. (2000). We discuss possible
reasons of this difference.
