This paper reports the simulated scattering characteristics of CdTe/ZnS quantum Dots (QDs) pumped by 532-nm laser pulses based on the simulation and experiment. Comparing to CdTe QDs, the CdTe/ZnS QDs exhibit a red frequency-shift, a lower scattering intensity, but exhibit a nonlinear transmission under 1064-nm nanosecond laser pulses, more chemical/physical stability, the nonlinear transmission is 1.12times than that of CdTe QDs. The energy-dispersive spectroscopy (EDS) data of CdTe/ZnS QDs clearly revealed the Cd, Zn and S components exsit in the CdTe/ZnS QDs. These scattering characteristics of QDs make them find special applications in biosensor and Self-adapted optics.