Sacrococcygeal teratoma(SCT) is a tumour located at the base of coccyx (tail bone) and thought to be derived from embryonic germ cell layers.The tumors present mostly in infancy. Modern imaging techniques may be helpful to detect the extent of mass. Here we report a case of 1 year old female baby who presented to the emergency department of MKCG with complains of anuria and constipation for last 4 days.The abdomen was distended.USG abdomen and pelvis and CECT abdomen showed mass in the sacro coccygeal area.FNAC confirmed the diagnosis as MALIGNANT GERM CELL SACROCOCCYGEAL TERATOMA. Most sacrococcygeal teratomas are not likely to be malignant and prognosis tends to be good after resection. But in our case the SCT was found to be malignant with poor prognosis.