Flower-like SrCO3 nanostructures, consisting of SrCO3 nanorods with about several hundred micrometres in length and several hundred nanometers in width, have been synthesized by a convenient hydrothermal process. X-ray diffraction (XRD) pattern reveals that the flowerlike SrCO3 nanostructures are of orthorhombic phase. Furthermore, selected area electron diffraction (SAED) and high-resolution transmission electron microscopy (HRTEM) illustrate that the SrCO3 nanorods are single crystalline in nature. Finally, the formation mechanism of the SrCO3 nanostructures has been preliminary presented.