32 weeks old stomach hardened a dozen times, is the manifestation of painless contractions, is a normal physiological phenomenon, no need to intervene in the treatment, regular checkups can be; may also be caused by the preterm labor, should be timely medical treatment. 1. Normal physiological phenomenon: generally in late pregnancy may often occur after painless contractions, mainly manifested as a hard belly, but no pain. At the beginning of 1-2 times a day, then the frequency gradually increased, to the birth of even 5-6 minutes a time, usually belong to the normal physiological phenomenon, without special treatment. 2. Preterm labor: If the 32-week pregnant woman appears to have a hard, taut stomach, accompanied by obvious abdominal pain, which belongs to the painful contractions, may be the manifestation of preterm labor, and a few patients may be accompanied by vaginal bleeding, placenta previa and other conditions. It is recommended that pregnant women seek timely medical care for ultrasound, fetal heartbeat monitoring tests and other aspects of the examination, if the contractions are getting tighter and the pain is getting more and more serious, it should be timely fertility preservation treatment.