Pheretima has a closed blood vascular system. It has two major blood vessels-dorsal and ventral. These two are connected by 4 pairs of hearts present in 7th, 9th, 12th, and 13th segments. Each segment contains one pair of hearts. Lateral hearts are present in 7th and 9th segments. Lateral oesophageal hearts are present in 12th and 13th segments.
One pair of anterior loops are located in each of 10th and 11th segments.