Five alloys were selected randomly in the composition range showing the best shape memory effect in Fe-Mn-Si system reported by Murakami. The shape memory effects of those alloys were mainly investigated through the training treatment which consisted of the repetition of 2% tensile deformation at room temperature and subsequent annealing at $600^{circ}C$ above $A_r$ temperature. At the same deformation degress in rolling $600^{circ}C$-annealing for 1 hr. showed the best shape memory effect, and 10%-deformation degrees represented maxima of the shpae memory effects at all annealing temperatures, $500^{circ}C$, $600^{circ}C$ and $700^{circ}C$. The shape memory effects of the alloys were increased by increasing training cycle up to 5 cycles. This was because a large number of dislocations introduced by training process gave rise to increase in the austenite yield stress, and acted as nucleation sites for stress induced ${varepsilon}$ martensite. The thermal cycling treatment, repetition of cooling in nitrogen at $-196{circ}C$ and heating to $300^{circ}C$ for 5 min., did not improve the shape memory effect.