Results: 499 articles were identified, of which 15 met the criteria for inclusion, published between 2006 and 2016 and analyzed in their entirety. Neutropenia was the most reported hematologic toxicity in 12 (80.0%) studies, and the second most common in three (20.0%), in varying degrees, being responsible for reducing and/or delaying of doses in six (40.0%) studies. Conclusion: the studies included in this review showed that neutropenia in patients with colorectal cancer in chemotherapy treatment have low incidences in different degrees, despite the significantly high rates of neutropenia associations, as the most common adverse event in the various analyzed regimes.