Objective To investigate the application of allogenous acellular dermal matrix biomaterial patches in the repair of tissue defects of different types and positions in neonates and infants. Methods Allogenous acellular dermal matrix biomaterial patches were used in the repair of tissue defects of different types and positions in neonates and infants. There were 3 patients with abdominal wall defect after bulge excision for giant hilum, 1 patient with abdominal wall defect after abdominal fibroma excision, 1 patient with rectovaginal fistula and 1 patient with coxal skin necrosis caused by necrotizing fasciitis. Results One patient with giant hilum resigned from treatment, and the other 5 patients gained favorable recovery, with no complications. Conclusion Allogenous acellular dermal matrix biomaterial patches may yield good outcomes in the repair of tissue defects of different types and positions in neonates and infants.