Multivariate analysis of statistically significant factors, postpartum time, BMI, iron supplement intake during pregnancy, red meat intake, serum vitamin A level, serum ferritin level, serum transferrin receptor level and anemia during pregnancy in univariate analysis showed that postpartum time, iron supplement intake during pregnancy, red meat intake, serum ferritin level, serum transferrin receptor level and anemia during pregnancy were associated with anemia in postpartum women (p < 0.05) in Table 3. The gene discussed is TFRC; the disease is anemia.