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【目的】探讨胎儿皮下软组织厚度及肝脏长度(LL)与胎儿体质量(EFW)的相关性。【方法】将孕龄为13~40周的1713例正常胎儿按照孕龄分为六组：A组(13~16周)；B组(17~20周)；C组(21~24周)；D组(25~28周)；E组(29~32周)；F组(33~36周)；G组(37~40周)。采用四维超声测量各组胎儿双顶径、头围、腹围、股骨长度、肱骨长度并估测 EFW,同时测量胎儿颈项皮肤厚度(NF)、面颊(CCD)、腹部(ASTT)、肱骨(HSTT)、股骨(FSTT)皮下软组织厚度及 LL,分析各指标与 EFW的相关性。【结果】NF、CCD、ASTT、HSTT、FSTT皮下软组织厚度及 LL与 EFW 呈显著性正相关(r =0.53、0.66、0.60、0.68、0.71、0.88,P <0.05),且 NF、CCD、ASTT、HSTT、FSTT、LL均与孕周呈正相关(r =0.72、0.71、0.68、0.78、0.81、0.82,P <0.05)。【结论】胎儿 NF、CCD、ASTT、HSTT、FSTT皮下软组织厚度及 LL与 EFW相关性,采用四维彩超测量 NF、CCD、ASTT、HSTT、FSTT皮下软组织厚度及 LL 预测 EFW 相对准确,方法简便,值得临床推广应用。“,”Obj ective]To discuss the clinical evaluation on the correlation between the weight and fetal subcutaneous soft tissue thickness and liver length .[Methods]1 7 1 3 cases of normal fetuses with gestational age from13 to 40 weeks were divided into six groups according to gestational age:group A (13 ~ 16 weeks);group B (17 ~ 20 weeks);group C (21 ~ 24 weeks);group D (25 ~ 28 weeks);Group E (29 to 32 weeks);Group F (33 to 36 weeks);group G (37 ~ 40 weeks).4D ultrasound was used to measure fetal bipa-rietal diameter,head circumference,abdominal circumference,femur length,humerus length,and to estimate the EFW.Measurement of fetal neck skin thickness (NF),cheek-to-cheek diameter (CCD),abdominal soft tissue thickness (ASTT),humeral soft tissue thickness (HSTT),femoral soft tissue thickness (FSTT)sub-cutaneous soft tissue thickness and liver length (LL)were simultaneously conducted,The correlation between the indicators and EFW were analyzed .[Results]NF,CCD,ASTT,HSTT subcutaneous soft tissue thickness and LL and EFW showed significant positive correlation (r=0.53,0.66,0.60,0.68,0.71,0.88,P <0.05) and NF,CCD,ASTT,HSTT and LL were positively related with gestational age(r=0.72,0.71,0.68,0.78, 0.81,0.82,P <0.05)[Conclusion]NF,CCD,ASTT,HSTT subcutaneous soft tissue thickness and LL and EFW show significant positive correlation.Four-dimensional color Doppler ultrasound measurement of NF, CCD,ASTT,HSTT,FSTT,LL and EFW are relatively accurate.The method is simple and convenient,and is worth to be popularized in clinical application.