Lysyl oxidase-like-1 (LOXL1) is a copper-dependent amine oxidase that maintains the structural integrity of the extracellular matrix (ECM) by catalyzing the cross-linking of collagen and elastin. However, aberrations in LOXL1 expression can contribute to diseases like glaucoma, tissue fibrosis, and cancer. LOXL1 has been found to be overexpressed in various malignancies, playing a pivotal role in tumor growth and metastasis. Although some studies suggest tumor-suppressive attributes of LOXL1, its role in tumorigenesis remains controversial. Research on LOXL1 has been primarily focused on pseudoexfoliation syndrome/glaucoma, with limited reviews on its impact on cancer. This review aims to explore LOXL1 comprehensively, including its structure, biological effects, and regulatory processes. Emphasis is placed on understanding the relationship between LOXL1 and tumorigenesis, specifically how LOXL1 influences tumor microenvironment remodeling, tumorigenesis, and metastasis. The review also discusses potential therapeutic strategies targeting LOXL1 for anti-fibrosis and anti-tumor interventions.