Microship and method for cell arrangement

[Problems] To provide a microchip for cell arranging which transfers and arranges the cell accurately and quickly, by combining advantages of the method of an optical tweezer and of micro channel. [Means for Solving Problems] A microchip for arranging cells, including a base, the base comprising: at least one cell supply channel including a cell inlet port in liquid communication with a supply mechanism configured to supply the cells into the cell supply channel; at least one cell drain channel including a cell drain port in fluid communication with a drain mechanism, the cell drain channel configured to guide the cells to the cell drain port; at least one reservoir for temporarily storing the cells flowing between the cell supply channel and the cell drain channel; at least one cell arrangement portion for receiving cells introduced from the reservoir, the cell arrangement portion comprising plural compartments partitioned by a wall; and at least one junction channel extending from the cell arrangement portion to the reservoir; wherein the reservoir is wider than the cell supply channel, the cell drain channel and the junction channel.