Abstract: The invention relates to an apparatus for breaking thrombus and aspirating the thrombus comprising: an aspirating rotary grinding hand-held system which integrates a rotary grinding head driving device, an aspirating device, a power supply device and a control device; a micro catheter device which is communicated with the aspirating device and the rotary grinding head driving device, respectively; a waste liquid collecting device which is connected to the aspirating device, wherein the aspirating device and the waste liquid collecting device form an airtight passage; and a distal end rotary grinding head device which is connected to the rotary grinding head driving device through a connection mandrel, wherein the power supply device provides power for the rotary grinding head driving device; wherein the distal end rotary grinding head device and the connection mandrel are accommodated in an inner cavity of the micro catheter device; and wherein the control device controls the aspirating device and the rotary