BI (Business Intelligence) is considered as a top priority of enterprises in investment decisions on information systems. Deploying a BI system is very complex, not just installing software and hardware, its success depends on assessing the current situation, planning, analyzing and improving business processes. This study was conducted to identify the factors influence the readiness of deploying BI in enterprises using ERP systems. Base on that, we suggest some solutions to increase the readiness and availability to better support enterprises in preparing for BI system deployment in the future. We surveyed participants in the process of deploying and using ERP system in theirs companies at Ho Chi Minh City. The research uses a combination of qualitative and quantitative methods to propose a research model, test model, discuss results and propose solutions. The experimental research results show that the readiness factors that enterprises need to pay attention to when deploying BI systems, in the order: Organization, Technology, Process and People.