Objective To explore the predictive value of "Li qi island sign" and "black hole sign" on the enlargement of hematoma in cerebral contusion and laceration. Methods a retrospective analysis in 96 cases of contusion and laceration of brain hematoma enlargement in patients our hospital from January 2016 to December 2017 with early CT findings and clinical data, and evaluate the "Li qi island sign " and "black holesign" the predictive value of sensitivity and specificity, positive predictive value and negative laceration hematoma enlargement in predicting cerebral contusion. Results 412 cases of cerebral contusion patients were followed by CT diagnosed hematoma enlargement in 96 cases, hematoma early manifestations of CT for expanding "Li qi island sign " in 44 cases, the "black hole" sign in 38 cases, the other 14 cases; in the prediction of cerebral contusion and laceration of hematoma expansion, "Li qi island sign" and "black hole.sign" the sensitivity was 45.83%, specificity was 39.58%; 96.52%, 94.94%; the positive predictive value were 80%, 70.37%; negative predictive value were 85.43%, 84.03%. Conclusion CT "Li qi island sign" and "black hole sign" are reliable CT signs of cerebral contusion and hematoma, which can effectively predict the risk of enlargement of hematoma in cerebral contusion and laceration. "Li qi island sign" and "black hole sign" are of great value in the prediction of hematoma enlargement in patients with cerebral contusion and laceration.