The populational density of Cedrela fissilis Vell. was evaluated. In a secondary forest area in Parque Estadual Lago Azul from Campo Mour o/PR, twenty-four parcels of 20m x 25m were used, totalizing 12,000 m2. Measures of circumference at breast height (CBH) were taken, as well as distinctions between young, adult and old individuals were established. 74 individuals have been sampled: 38 young, 20 adult and 16 old individuals. It was observed that density of Cedrela fissilis population was 61,6 individuals in each hectare represented by: 51,35% of young, 27.02% of adult and 21,61% of old individuals. Results, in accordance with searched literature, are significant and indicate that the secondary forest of the Parque Estadual Lago Azul is passing by a reconstitution phase.