[en] Study of A∼80 nuclei is interesting because of various shape evolutions and shape co-existences. High spin structure in these nuclei is dominated by the g_9/2 orbitals and level density is smaller compared to the rare-earth nuclei. This leads to significant variations in nuclear. The purpose of present work is to study the yrast-band and gamma-band structure for the even-even ⁸⁴Sr nucleus using Triaxial Projected Shell Model (TPSM) approach. This nucleus is of interest because it is a probable member of quasi-ground and quasi bands of the spherical region and it is convincing to study the corresponding ground and bands in the deformed region