We have focused on the alloys combining with Ti and Platinum group metals such as TiPt or Ti(Pt, Ir) as high-temperature shape memory alloys. In TiPt binary compounds, the martensite transformation from the B2 phase to the B19 phase occurs around 1273 K. In TiIr binary compounds, it is said that there are two phase-transformations from the B2 phase to unknown phase and to the monoclinic phase. The phase transformation temperature of the first phase transformation is around 2073 K in the Ir-rich composition and drastically decreases to room temperature in Ti-rich composition. In the previous study, Ti(Ir, Pt) ternary compounds were investigated and the phase transformation temperatures, for example, As, increases from 1273 K in TiPt to 1448 K in Ti-12.5Pt-37.5It (at%). In the ternary alloys, the low temperature phase can be identified as B19 structure by XRD, but a complex stacking of (110)B2 plane depending on the alloy composition was also observed in TEM. The detail of the structure is still under investigation. To understand phase transformation, it is also necessary to understand high temperature phase in ternary alloys. The shape memory effect of the ternary compounds was also investigated using compression test. By heating above phase transformation temperature after deformation at 1273 K, 4% of the shape recovery was observed in the ternary alloys. However, in the previous study, the strain at high temperature test cannot be measured precisely. In this study, the phase identification was performed at 1473 and 1573 K using high temperature XRD. The compressive loading-unloading test was performed from room temperature to 1523 K. The CCD camera was used to measure the strain accurately for the high temperature test. The shape memory effect and the pseudoelastic behavior, which is strain recovery during unloading below phase transformation temperature, was found in all tested samples.