Generally this thesis deals with application of thermodynamical model to high, energy interactions. The first chapter is an introduction. We give the important definitions and also results needed in subsequent work. In chapter 2 a model incorporating various thermal components is proposed to discuss the production of secondaries having large transverse momentum component (i.e. P(_L) ~ 0). The model is compared to the ISR data of large P(_T) pions. Chapter 3 gives a brief description of experimental situation about the azimuthal, rapidity and transverse momentum correlations. The general treatment of multi-temperature model (MTM) is expressed. Momentum recoil effect is included to fit the same/opposite side momentum correlations data. Some other relevant models are explained in this part for comparison. Finally calculations of average charged particles multiplicity accompanying the trigger particle is shown in this chapter. Chapter 4 considers the transverse mass (m_T) universality and its agreement with MTM. Production of high mass particles and their correlation are investigated in the framework of MTM. Again some possible models of different authors are presented and referenced in here.