RESUMEN
Objective To understand the epidemiology and trends of of unintentional injury deaths of children 2=16.44 , χ2=5.284 , P＜0.05）. The three leading causes of unintentional injury deaths were drowning (2.30/10000), suffocation (1.90/10000), and traffic accidents (1.42/10 000). Drowning among boys was 8.74 per cent, which was significantly higher than in girls（χ2=9.36，P＜0.05）. Drowning was the leading cause in boys, while suffocation was the leading cause of accidental death in girls. Accidents accounted for 57.49% of all deaths among children aged 1 to 4 years. Suffocation was the leading cause in children <1 year of age, but drowning（38.62%）was more prominent in children 1-4 years of age. Suffocation has high incidence in the winter, and drowning has high incidence in the summer season（P＜0.05）. Conclusions Effective childhood injury prevention may require different prevention policies combination depending on epidemiological characteristics such as genders, age groups，household register and seasons. The prevention programs should be carried especially the floating population.