Concentrated solar power tower plants are one of attractive renewable energy systems capable of not only generating electricity, but also driving chemical processes that require high temperature (>1000 K) heat input. Solid particle receivers have been proposed as an approach for efficiently achieving higher temperatures. In a falling particle receiver nearly black particles are dropped inside a cavity to directly absorb the concentrated solar irradiation. Particles are lifted up to a tower receiver for solar heating and then back down to a hot storage on the ground. In this paper, a model of a single falling particle from the top is established, the Energy-Balance equation of the single particle is used to simulate this process. The main variable properties of the heat transfer process are the particle diameter, falling distance, air velocity, and the concentrated solar flux. On the basis of the simulation results, following valuable conclusions are obtained. It is concluded that convention and radiation losses decreases with the increase of particle diameter increases. Bigger particles are able to absorb more concentrated solar irradiation and get higher final temperature with longer heating distance. While for falling the same distance such as 0.5 m, smaller diameter of the particle leads to a higher particle temperature. For bigger particles whose diameter is 0.5 or 1 mm, the particle temperature increases with the falling distance and tend to a stable value. However, smaller particles with the diameter of 0.3, 0.2 or 0.1 mm there exist the peak particle temperature in the falling process and then drop to a stable value. For the calculated particle diameter range, the final temperature of the particle approaches to a stable value. Air velocity has no influence on the final temperature of the particle, but take effects on the distance at which the particle get to the final temperature. The final falling distance to get the stable temperature decreases with the increase of air velocity. The concentrated solar irradiation directly determine the final temperature of the falling particle and the distance to get stable temperature. When increasing the concentrated solar irradiation, the final temperature of the solid particle increases, and the distance to get to the final temperature is shortened. The above conclusions have a strong guidance to the large scale falling particle receiver design. Under the basic design conditions mentioned in this paper, in order to get higher particle temperature, it is recommended that the falling distance of the particle is 0.5 m, the diameter of the particle is 0.3 mm, and the velocity of the air is 2 m/s.