An imaging detection chip, including an optical antenna and a photosensitive array in parallel to the optical antenna. The optical antenna is an array structure including a plurality of antenna cells spaced apart and electrically connected to each other. The photosensitive array is an array structure including a plurality of photosensitive cells spaced apart from each other. The plurality of antenna cells and the plurality of photosensitive cells are equal in number. The plurality of antenna cells of the optical antenna is aligned, perpendicularly to a parallel direction of the photosensitive array and the optical antenna, with the plurality of photosensitive cells at corresponding positions of the photosensitive array, respectively. The plurality of antenna cells each includes one or more nanocones each including a top surface; top surfaces of the plurality of antenna cells are electrically connected to each other.