A case of a pregnant woman suffering from COVID-19 is presented, who developed coagulopathy in the absence of severe clinical symptoms. The PCR test of the vaginal swab was positive on SARS-CoV-2 RNA, suggesting a possibility of perinatal transmission. A cesarean delivery was done because of a non-reassuring fetal heart rate; the placenta showed increased perivillous fibrin deposition and intervillositis. Moreover, placental infection with SARS-CoV-2 was demonstrated by placental immunostaining. We suggest a relation between placental fibrin deposition and both chronic and acute intervillositis, non-reassuring fetal heart rate and coagulopathy in pregnant women with COVID-19. This article is protected by copyright. All rights reserved.