The invention provides a quantum imaging method and a quantum imaging system. According to the quantum imaging method, measurement data of at least any three parameters of Sn, Sn+m, In(x, y) and In+m(x, y) needs to be stored. Therefore, the amount of stored data is reduced in terms of overall implementation, and the burden of data storage is reduced. Meanwhile, computing resources involved in thequantum imaging method are correspondingly reduced, hardware implementation is simplified, and practical use of quantum imaging is facilitated. In the method, n and m in Sn, Sn+m, In(x, y) and In+m(x,y) are any positive integers. Data required for calculation through the quantum imaging method is not limited by adjacent frames, and imaging can be performed across multiple frames, so that quantumimaging is realized more flexibly. By means of the quantum imaging method, data processing is simplified, rapid and efficient imaging is achieved, the speed and efficiency of quantum imaging are improved, and therefore, online imaging can be achieved.