目的 :研究母亲因素与 LBWI的关系 ,提出影响 LBWI发生的有关因素。方法 :采用病例对照研究的方法 ,对 48例 LBWI和 433例非 LBWI的母亲进行流行病学调查分析。结果 :LBWI发生与孕期妊高征 ( OR=1 .781 )、孕周 ( OR=0 .551 )、母亲为农民 ( OR=2 .531 )有关。结论 :加强围产期保健 ,减少妊高征和早产 ,可有效降低 LBWI的发生 Objective: To study the relationship between maternal factors and LBWI and to propose the relevant factors that influence the occurrence of LBWI. Methods: A case-control study of 48 cases of LBWI and 433 non-LBWI mothers conducted epidemiological investigation. Results: LBWI was associated with pregnancy-induced pregnancy-induced hypertension (OR = 1.781), gestational age (OR = 0.555) and mothers as peasants (OR = 2.531). Conclusion: Strengthening perinatal care, reducing pregnancy-induced hypertension and premature delivery can effectively reduce the occurrence of LBWI