The invention discloses a probe unit for testing a micro pitch array. The probe unit is enabled to make contacts in each row in stable contact with a test target when a probe sheet has two or more rows of contacts. The probe unit comprises the probe provided with an insulation film and lead patterns formed on the insulation film, wherein, contacts that contact the test targets are formed in two omore rows in specific parts of the patterned lead wire. The probe unit further comprises a body block for fastening the probe sheet and a pressing component for pressing the contacts towards the testtarget so as to enable the contacts in each row to be respectively pressed by the pressing component.