When a pregnant woman undergoes a routine urine examination, if the mucus filament index increases, it may be for physiological reasons or pathological reasons, as follows: 1, physiological reasons: mucus filaments are mainly secreted by cells, and an increase in mucus filaments indicates an increase in the number of epithelial cells or other cells in the urine. Pregnant women as a special group, the corresponding changes in the level of human hormones may cause an increase in the number of cells, mucus filaments, but does not produce any clinical symptoms and clinical consequences; 2, pathological reasons: when pregnant women occur urinary tract infections, stones, tumors and other related diseases, will also produce an increase in the number of cells, mucus filaments increased phenomenon, so specific problems need to be analyzed specifically, it is recommended Combine the patient’s clinical symptoms and other examination results to make a comprehensive judgment of the condition.