Measurements of temporal and spatial changes in the velocity and size of droplets of diesel fuel sprays were conducted near the nozzle orifice by a laser 2-focus velocimeter (L2F). The L2F had a high sampling frequency of 15MHz. Fuel sprays were injected intermittently into the atmosphere by using an 8-hole injector nozzle. The diameter of the nozzle orifice was 0.112 mm. The injection pressure was set at 40MPa. The time interval between injections was 333ms. Measurement positions were located at 10 mm from the nozzle exit. The number of data measured at each position was 40,000. The distance between droplets in the direction of droplets’ flight was determined by multiplying the droplet velocity and the time interval between 2 droplets passing the measurement volume. The distance between droplet surfaces was evaluated by the distance between droplets subtracted by the droplet size. The measurement result showed that the droplet velocity was the fastest at the center of fuel sprays and the droplet size near the spray center was larger than that at the periphery of fuel sprays. It was found that the distance between larger droplets was longer than that between smaller droplets. It is understood that the distance between droplets is related to the droplet size.