In order to realize the timely diagnosis and treatment of infantile fundus diseases, the developed infant retinal wide-area imaging system can solve the large field of view requirements during imaging. The system includes an illumination portion, an imaging portion, and an image capture device.Designed corneal contact ophthalmoscope, using aspherical design with small aberration and large refractive index to meet the requirements of large field of view. The image acquisition device is designed which is written in C++ for image acquisition, camera calibration, and geometric distortion correction. The experimental results show that the wide-area retinal imaging system for infant can achieve wide-area imaging of 85° field of view; multi-ring fiber optic illumination can obtain clear retinal images; the correction based on camera calibration of image geometric distortion can effectively compensate geometric distortion of the retinal imaging light path. The wide-area retinal imaging system for infant can provide an objective and clear basis for the diagnosis and screening of ophthalmic diseases.