Transmission and reflection type digital holographic microscopy system

The invention discloses a transmission and reflection type digital holographic microscopy system, a light path of a reflection type digital holographic microscopy is characterized in that a laser beam passes through a first half-wave plate and then passes through a polarization beam splitter to be divided into two light waves with vertical polarization states, and the light transmitted through the polarization beam splitter is an object light beam; the light reflected by the polarization beam splitter is reflected by the first reflector and then penetrates through the polarization beam splitter, so that a reference light beam is formed; acquiring a holographic image of the object to be imaged based on the object light path and the reference light path; according to a light path of the transmission-type digital holographic microscope, a laser beam passes through a first half-wave plate and then passes through a polarization beam splitter to be divided into two light waves with the vertical polarization state,