The paper describes the equipment of integral measurement of dipole magnetic field for HIRFL-CSRe and introduces integral field measurement method and content. In order to adjust the effective length of magnet and to improve the dispersivity of the 16 dipole magnets, dispersivity is ceaselessly measured after adding or taking out silicon steel slice or changing current of rectifiable coil. After magnetic padding and measurement, the dispersivity of dipole magnets satisfies the requirement of CSR project. The final measurement result of integral magnetic field distribution and transfer function is given. The magnet design and manufacture are also emended with measurement data.