Electromagnetically induced transparency (ΕΓΓ) and coherent population trapping (CPT) have received considerable attention in recent years. In this paper, dark resonances in selective reflection spectroscopy of A-type Cs atoms are reported. The temperature of Cs was heated about 150 ℃ and the coupling beam was tuned to the resonant frequency of the transition 6S1/2(F=4)→6P3/2(F=3) and the probe beam frequency was scanned over the transition 6S1/2(F=3)→6P3/2. The frequency detuning and intensity effect of coupling laser were demonstrated in dark resonances spectrum. The obvious induced transparency was observed in the selective reflection spectrum with sub-Doppler structure. The result was important to study the atomic coherent, atom-wall collision, long-range interactions between excited atoms and solid-state surfaces.