Recombination rates for processes Xe+ +Cl→ + M- XeCl* +M (M = He, Ne or Ar) have been calculated. It has been found that the recombination rates in buffer rare-gases He, Ne, Ar at 300K reach the maximums of 3.3cm3see-1, 2.5cm3sec-1, 2.4om3sec-1, at pressures of 17 atm, 6.5 atm, 2 atm respectively. In addition, the recombination rates drastically decrease with increasing gas temperature at fixed gas density.