【Objective】 To describe time to start adding complementary food among community children aged 0~3 years and its influencing factors. 【Methods】 Family as the basic unit of investigation, multi-stage sampling was taken; 618 families with children aged 0~3 years were interviewed with self-designed questionnaire in seven pilot units. And then χ² test and Logistic regression were employed to analysis the influencing factors of time to start adding complementary food. 【Results】 In the total 618 parents, the number of parents whose response was "6 months" or "4~6 months" were 135(21.84%) and 407(65.86%) respectively; Major risks of start adding complementary at 4~6 months were low income, low education level and not participated in child health care system. 【Conclusions】 Appropriate technology advocated starting complementary feeding after 6-month-age, however most community children started complementary feeding at 4~6 months. So, education of starting complementary feeding after 6-month-age needed to be strengthened.