Background:Antiphospholipid syndrome (APS)-related immune factors are considered as an important cause of recurrent spontaneous abortion (RSA).Anticoagulant and anti-inflammatory treatments are believed to effectively improve adverse pregnancy outcomes by affecting the abnormal autoimmune response of the matemal-fetal interface.The aim of this study was to observe the clinical characteristics and treatment outcomes of anticoagulant regimens and anti-inflammatory plus anticoagulation regimens for APS-related RSA.Methods:APS-related RSA cases from September 2011 to September 2016 at Peking University Third Hospital were retrospectively analyzed.The patients were assigned to study group (anti-inflammation plus anticoagulation) and control group (simple anticoagulation).The incidence of repeat abortion,the incidence of placental dysfunction,the gestational weeks of pregnancy,and the mean weight of the fetus were observed.Results:The pregnancy and neonatal outcome indicators of the repeat pregnancy loss rate (1 l.l 1％ vs.22.70％),placental dysfunction-related diseases (6.35％ vs.15.60％),the mean birth weight of infants b after 24 weeks gestation (3152.41 ± 844.67 g vs.2765.76 ± 816.40 g),full-term delivery weight (3456.28 ± 419.79 g vs.3076.18 ± 518.79 g),the proportions of low birth weight infants (12.70％ vs.21.98％),and small for gestational age (6.35％ vs.14.18％) differed significantly between the study and control groups (all P ＜ 0.05).The incidence of preterm delivery,term delivery,and stillbirth was not significantly different between the two groups,and there was no significant difference between the study and control groups in gestational age at birth (37.6 ± 3.3 weeks vs.36.9 ± 3.2 weeks;P ＞ 0.05).Conclusion:The anti-inflammatory and anticoagulation regimen is more effective than the simple anticoagulation regimen in the treatment of APS recurrent abortion.