The embodiment of the invention discloses a memorizer as well as a detecting method thereof and a
chip. The memorizer comprises a substrate, a
laser detection circuit located on the substrate as well as a data circuit area and a data
storage area located on the substrate; the
laser detection circuit at least comprises a plurality of monitoring diodes, at least one recharge
transistor and at least one
amplifier unit, the input end of each
amplifier unit is electrically connected with the negative
electrode of at least one monitoring
diode and the output end of each recharge
transistor respectively, the positive electrodes of the monitoring diodes are grounded, and the input end of each recharge
transistor is electrically connected with a power supply; the data circuit area is provided with a plurality of sensitive circuits, the data
storage area is provided with a storage array, each sensitive circuit is arranged adjacent to at least one monitoring
diode, and / or the storage array is arranged adjacent to at least one monitoring
diode. The memorizer provided by the embodiment of the invention is low in production cost, is capable of effectively improving the accuracy of
laser detection and avoiding miss detection.