The invention relates to a high-resolution pick-up device which belongs to cameras of a photoelectric conversion pick-up camera. The high-resolution pick-up device comprises an outer housing and a photoelectric converter used for converting light into electrical signals, wherein light inlet holes are formed on the outer housing, and one light inlet hole is only communicated with one general photoelectric converter. The high-resolution pick-up device is characterized in that the general photoelectric converter in one light inlet hole is formed by combining two or more small photoelectric converters, and the two or more small photoelectric converters are combined to convert entered light into the electrical signals, namely, one small photoelectric converter only has the function of photoelectric conversion on partial light in the general photoelectric converter. The high-resolution pick-up device has the advantages that the integrated photoelectric converter of the existing camera is replaced by the general photoelectric converter formed by combining a plurality of small photoelectric converters; and under the condition of identical optoelectronic scanning frequency f, the optoelectronic scanning frequency on the unit photoelectric conversion area of the photoelectric converter can also be greatly increased, and therefore, a new way of improving the maximum image output pixel of the pick-up camera is found.