Micro-fluidic chip

The utility model relates to the technical field of medical detection, experimental devices or biochips. The utility model relates to a chip, in particular to a microfluidic chip. The device comprisesa substrate and a cover plate, the cover plate and the base plate are covered and form a channel in the covering area; the channel sequentially comprises a sample adding section, a reaction section and a detection section from an inlet to an outlet; outlets of the channels are provided with waste liquid areas; the waste liquid area extends from the outlet of the channel to the inlet of the channel along two sides of the channel; the waste liquid area extends from the outlet of the channel to the inlet of the channel along the two sides of the channel; according to the micro-fluidic chip, blank unused areas which are generated due to the fact that the sample adding section is wide and the detection section is narrow and located on the two sides of the detection section can be utilized, thearea of a waste liquid ar