An analysis chip that enables an apparatus to be small, analysis to be simple, analysis time to be short and analysis of both glycosylated hemoglobin and glucose to be highly accurate is provided. The electrophoresis chip includes an upper substrate 4, a lower substrate 1, a first introduction reservoir 2a, a first recovery reservoir 2b and a capillary channel for sample analysis 3x; the first introduction reservoir 2a and the first recovery reservoir 2b are formed in the lower substrate 1; and the first introduction reservoir 2a and the first recovery reservoir 2b are in communication with each other via the capillary channel for sample analysis 3x.