Pion induced reactions for charmed baryon productions*

We discuss production reactions for charmed baryons at hadron facilities such as J-PARC.  One and two-quark reaction mechanism are introduced and derive an analytic form for these reaction amplitudes from which we can study how the reaction rates are related to the structure of various charmed baryons.  Actual production rates are estimated by fixing the unknown parameters from the existing data of the strangeness productions for the prediction of charmed sector.