The embodiment of the invention discloses a method for packaging a single NV color center and a single NV color center device. The method comprises the following steps: a), fixing two optical fibers, wherein end faces of the two optical fibers are opposite, the first
optical fiber is connected with a
laser and used for transmitting exciting light, and the second
optical fiber is connected with a
spectrometer; b), dropping turbid liquids containing single-
crystal diamond particles between the two end faces of the two optical fibers, observing whether typical
fluorescence of the NV color center appears on the
spectrometer after the turbid liquids are evaporated, executing the c) step if the typical
fluorescence appears on the
spectrometer, and executing the e) step if the typical
fluorescence does not appear on the spectrometer; c), connecting the second
optical fiber to a TAC (time-to-amplitude converter), measuring a reverse
correlation function, judging whether to be the single NV color center, if so, executing the d) step, and otherwise, executing the e) step; d), connecting the two end faces of the two optical fibers to finish the
package; and e), washing away the single-
crystal diamond particles between the two end faces of the two optical fibers, and repeating the b) step. According to the invention, the process of searching and positioning the single NV color center is simplified, the cost of searching and positioning the single NV color center is reduced, and the research and application of the single NV color center are convenient.