Microchip and the microchip inspection system

In performing the flow path designed such that the flow path resistance ratio corresponding to the desired inflow ratio (mixing ratio), to provide a microchip and microchip inspection system that facilitates the flow path design. For that purpose, a pump connection for driving fluid from the pump is injected by being connected to a pump, provided in communication with the pump connection, and a plurality of sample storage portion for storing samples each, a plurality of samples communicates provided in the housing portion, in a microchip with a merging portion where the sample flows from the sample receiving portion, between the pump connection and the sample holding, the sample holding portion to the merging section for adjusting the flow ratio of each sample, larger than the flow path resistance of at least the sample holding high resistance flow path is provided from.