The invention relates to a portable ophthalmic ultrasonic biomicroscope which comprises a shell, an ultrasonic sensor, an ultrasonic transmitting and receiving circuit, a signal conditioning circuit and a power supply module, wherein the shell comprises a handle which is held by an operator; an integrated microcontroller and an image storage module are arranged in the shell; the integrated microcontroller comprises a digital image processing module and an image transmission module, the digital image processing module is used for processing a digital image to obtain a anterior segment two-dimensional image with low-magnification optical microscope effect and different cross sections, and the image transmission module is used for transmitting images; the signal conditioning circuit is connected with the digital image processing module; the digital image processing module is connected with the image transmission module; and the image transmission module is connected with the image storage module. The portable ophthalmic ultrasonic biomicroscope has the advantages of small size, light weight and wide applicability, and is convenient for carrying by hand-hold.