Microfluidic devices with distributing inputs

The micro fluid equipment which has two or more functional principal parts which perform one or more fluid operations in parallel is offered. Two or more reagent common to the functional principal part, sample, or other fluid ("common fluid") is distributed so that it may ask for common fluid, and it is poured in into micro fluid equipment or シシテム through one or more distribution inflow ways to distribute. Multilayer assembly technology makes possible two or more distribution inflow ways, does not have the fluid groove intersection which is not desired and distributes them to two or more functional principal parts of micro fluid equipment.