E Evidence is a crucial process in proving the occurrence of criminal acts, such as sexual molestation against children. in fact, there are still cases of child sexual molestation in which the defendant is acquitted, even though the existing evidence is sufficient to prove the commission of the crime, as seen in decision no. 36/pid.sus/2023/pn lbb.the main issues of this research are: (1) the significant role of evidence in the form of witness testimony, visum et repertum, and expert testimony in cases of child sexual molestation in the decision of the lubuk basung district court no. 36/pid.sus/2023/pn lbb; and (2) whether the judge’s decision is in accordance with the indonesian criminal procedure code (kuhap) and the constitutional court decision no. 65/puu-viii/2010.this research employs a normative and descriptive research method. data were collected through literature review and interviews, analyzed qualitatively, and conclusions were drawn deductively.the results of this study indicate that evidence in the form of witness testimony, visum et repertum, and expert testimony plays an important role in proving the crime of child sexual molestation in the decision of the lubuk basung district court no. 36/pid.sus/2023/pn lbb. the testimony of the child victim as a witness explains in detail the occurrence of the sexual molestation, which is then corroborated by the visum et repertum and strengthened by the testimony of forensic and psychological experts, thereby proving the occurrence of child sexual molestation.the judge’s decision, which failed to consider such evidence in the decision of the lubuk basung district court no. 36/pid.sus/2023/pn lbb, is not in accordance with articles 183 and 188 of the criminal procedure code (kuhap). furthermore, the rejection of the victim’s testimony and supporting witnesses on the grounds that it constituted testimonium de auditu also deviates from constitutional court decision no. 65/puu-viii/2010.