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In order to understand the airflow speed field and deposition distribution rules and characters of a designed hanging cold sprayer, several numerical spraying models for that based on CFD technology were established. Beside that, the verification experiments were conducted. The simulation results indicate that the effective blowing distance is positively related to the blowing speed of the cold sprayer. The cold sprayer gets the minimum blowing distance at the height of 1.5m. The model gets larger ground mass-flow rate under the blowing speed of 5m/s and 25m/s. The model gets better uniformity under blowing speed greater than 20m/s and height greater than 2.0m. The consequences of simulation and verification experiments show that, in the cold sprayer’s blowing area, the relative deviation of modeling air flow field is between 10%~35%, and the relative deviation of droplets’ deposition model is between 15%~35%. As the consequence, both of the models can forecast the cold sprayer’s air flow field and the droplets’ deposition distribution correctly.