The invention discloses a frequency division matching method for increasing seismic data resolution of a limestone exposure area. In the frequency division matching method, a high-sensitivity detector and conventional detectors are considered to be used for observation under same conditions; then, seismic data acquired under the same conditions are respectively subjected to frequency division treatment by taking 20Hz as a boundary; then the seismic data more than 20Hz, corresponding to the high-sensitivity detector, are used as desired output to figure out a matched filter; furthermore, the seismic data more than 20Hz, which are acquired by all the conventional detectors, are subjected to matching filtering; and finally, the seismic data smaller than or equal to 20Hz, which are acquired by the conventional detectors, as well as the matched seismic data more than 20Hz are subjected to data reconstruction to obtain the seismic data subjected to frequency-division matching. According to the invention, the high-frequency components, corresponding to the seismic data, of the conventional detectors are enhanced, the low-frequency components are maintained, and the resolution of the seismic data of the limestone exposure area is increased.