A biochip for research of micro -fluidic laminar flow

The utility model discloses a biochip for research of micro -fluidic laminar flow, including offer the middle part main entrance on the chip and set up separately main entrance both sides rather than the branched passage who is linked together, a branched passage has been offered to the lopsidedness of main entrance, second and the 3rd branched passage have been offered in its opposite side interval slope, the intercommunication mouth of second, the 3rd branched passage and main entrance lies in preceding, the back position department of a branched passage and main entrance intercommunication mouthful respectively, contained angle between first, the 2nd branched passage and the 3rd branched passage and the main entrance is 30~40. The utility model has the advantages of set for the contained angle of branched passage and main entrance and be 30~40, when experimental, add different liquid respectively in main entrance and branched passage, liquid flow among the branched passage of both sides in to central main entrance the shear stress of liquid appropriate, be convenient for control the width of the interior liquid flow of main entrance, make it to form stable laminar flow flow state, do benefit to subsequent observiation and analysis and research.