The invention relates to the technical field of image sensors, and particularly relates to a diamond image element array, an image sensor and an acquisition method based on dislocation image enhancement. Multiple diamond image elements are arranged on a two-dimensional plane in a repeated and dislocation mode to form the image element array. The image sensor comprises the diamond image element array, a scanning drive circuit, a reading circuit, an analog-to-digital conversion (ADC) circuit, an image signal processor (ISP), a power supply circuit for power supply of the whole chip and a control circuit for intelligent control of the whole chip. Unlink the traditional sub pixel dislocation sampling technology, through a unique structure of diamond nested pixels, in a condition of the same or nearly the same spatial resolution, the size, the weight and the cost of the whole machine device are reduced compared with the convention, the image resolution is enhanced by 1.5 to 2 times on the whole through algorithm processing by the image signal processor (ISP), and the whole body has functions of improving the resolution, the signal-to-noise ratio (S/N) and the isolation degree and reducing the cost, the size and the weight.