The aim of the study was to analyze the lexical processing of children with typical language development. In this study descriptive and explanatory words an instrument of 30 was applied to measure the lexical processing from reading the word frequency (direct route) and reading pseudo-words (indirect route). The results show that children of both sexes to 11 years easily recognize the words of high frequency (HF) in relation to the words of low frequency (LF). At age 12 there is a balance between the frequencies of both types of words; however, there was no difference in the comparison between pseudo-words also word recognition by the direct route showed a better performance in relation to the indirect pathway. Chronological age is a determining factor to achieve better results on reading words of BF and pseudo-words high and low frequency variable.