There were total 124 bacteriophages and 55 Ralstonia solanacearum strains isolated from Ben Tre, Can Tho, Hau Giang, Tien Giang, An Giang, Dong Thap, Bac Lieu and Lam Dong province. Assessing parasitic abilities of 124 bacteriophages on 55 R.solanacearum strains, there were 10 bacteriophages i.e. FĐT13, FAG29, FLĐ38, FCT44, FCT46, FBT56, FBT67, FBT75, FTG97, FHG109 expressed wide parasitizing range (on 50 strains of R. solanacearum in total 55 tested strains, occupying 90.9%). Three R. solanacearum strains ĐT9, LĐ34, BT134 showed most sensitivity to 120 phages in total 124 tested phages, occupying 96.77%. Assessing lytic abilities of 10 bacteriophages on 3 R. solanacearum strains i.e. ĐT9, LĐ34, BT134, result indicated 5 bacteriophages i.e. FCT44, FCT46, FBT56, FBT67, FBT75 expressing stronger lytic abilities compared to l remaining bacteriophages strains.