ObjectiveTo study bacteriablocking effect of surgical gowns with new material. MethodsSemiquantitative and qualitative testing methods were used to detect bacteriablocking rates of key sites of surgical gowns(chest and forearm), the detected samples included sample A (composite material, unused）, sample B (composite material, after washing 100 times), and sample C (monolayer material, unused）. ResultsIn semiquantitative testing，the average bacteriablocking rates of three samples were 75.47%, 70.78%, and 73.73% respectively. In qualitative testing，three samples could effectively block the penetration of Staphylococcus aureus under wet condition and Bacillus subtilis var.niger spores under dry condition. ConclusionIn semiquantitative testing, all three kinds of samples had bacteriablocking effect, and the average bacteriablocking rate was> 70%; in qualitative testing, three samples all meet requirements of bacteriablocking effect under wet and dry condition.