  We investigate Theta^+ production via gamma N and NN reactions in order to
obtain information on the structure of Theta^+, especially its parity. We
observe that the positive parity. Theta^+production provides about ten times
total cross sections than those of the negative parity one in both photon and
nucleon induced reactions due to P-wave enhancement of the KNTheta vertex. We
also consider the model independent method in the nucleon induced reaction to
determine the parity of Theta^+ and show clearly distinguishable signals for
the two parities.
