[en] Processes of light ion production in high energy hadron interaction with nuclei are investigated. Deuterons, tritons and helium 3 yields from Li, Be, B, C, CF₂, Ni, Cu, Zn, Sn, In nuclei in pA → aX reactions at 7.5 GeV/s, π^-A → aX at 5 GeV/s are determined. Deuteron yields have been measured at the agles of 30 deg, 60 deg, 88 deg, 120 deg, 160 deg while tritons and helium-3 - at the angle of 30 deg. Considerable increase of d, t and ³He yields from light nuclei in pA-interactions as compared with π^-A^- interactions that cannot be explained by fusion and pick-up mechanisms is disclosed