The utility model relates to a digital holographic apparatus, especially to a fingerprint collection imaging apparatus in the police filed. A non-contact fingerprint collection digital holographic apparatus with nondestructive measurement is provided to solve problems of poisonous detection and destruction of original states of physical evidences in the existing latent fingerprint development technology, wherein the apparatus comprises a laser, a continuous attenuation plate, half-wave plates, a polarization beam splitter, holophotes, beam expansion filtering systems, a beam combination prism, a CCD image sensor and a computer. According to the utility model, multi-time collection can be carried out under the circumstances that fingerprints are not destroyed; not only can a problem of insufficient fingerprint collection on a traditional criminal investigation scene be solved, but also phase information as extra information is provide for obtaining fingerprint information texture; therefore, the provided apparatus has a practical significance in fingerprint collection of the police field.