  We present the preliminary pt differential cross section in pp collisions of
the D+s meson measured in the mid-rapidity region of ALICE with an integrated
luminosity of 4.8 nb^-1. The ratios between all the D meson preliminary pt
differential cross sections measured in the ALICE experiment (D+s,D0,D+,D*+)
are also presented and compared with the results of other experiments.
