Fluorescence detection circuit and nucleic acid POCT detection device

The invention relates to a fluorescence detection circuit which comprises a controller, a light source driving modulation module, a light source, a detector, a photoelectric conversion circuit, a filtering amplification circuit, a full-wave rectification circuit and an analog-to-digital conversion module, the output end of the controller is connected with the input end of the light source driving modulation module, and the output end of the light source driving modulation module is electrically connected with the light source. The detector is electrically connected with the photoelectric conversion circuit, the photoelectric conversion circuit is electrically connected with the filter amplification circuit, the filter amplification circuit is electrically connected with the full-wave rectification circuit, the full-wave rectification circuit is electrically connected with the analog-to-digital conversion module, and the output end of the analog-to-digital conversion module is connected with the input end of t