Micro-fluidic chip and device for automatically detecting CTC

The utility model discloses a microfluidic chip and device for automatically detecting CTC, which comprises a chip main body and a detection box, the chip main body is fixedly connected to the inner wall of the detection box, the upper surface of the chip main body is provided with a blood sample inlet, the liquid outlet end of the blood sample inlet is communicated with a main pipeline, and the surface of the main pipeline is provided with a plurality of focusing separation devices. According to the micro-fluidic chip and device for automatically detecting the CTC, the chip main body reduces the flow velocity and flow in a blood sample through the design of the focusing separation device and streamline deceleration, the concentration of the blood sample is realized, the CTC can be pushed to the center of the main pipeline through the focusing structure, so that parenchyma cells such as red blood cells and white blood cells enter the separation pipeline for separation, and the separation efficiency is improve