Microflow distribution device, manufacturing method and application thereof

The invention relates to a microflow distribution device, a manufacturing method and an application thereof, belonging to the field of minim testing device, or rather the field of microflow distribution. The microflow distribution device of the invention comprises a microflow distribution chip which is provided with at least one microflow layer; each microflow layer is provided with at least two paratactic microfluidic channels or a group of microfluidic channel trees formed in the way that a root microfluidic channel branches off for at least once; the microfluidic channel covers a cross-sectional area of at least 1 Mum2-1mm2; the entrance and exit are connected with the outside while all the other parts are arranged inside the microflow distribution chip. The microflow distribution device of the invention features low price and easy manufacturing, exact distribution of liquid samples at nano liter level and wide application prospect in multiple fields such as microfluid, microanalysis, drug screening, cell detecting and combined chemical reaction.