Due to the power saving feature of Bluetooth Low Energy (BLE), many mobile devices and wearable devices support BLE communication technology. In recent years, the popularity of IoT related applications, more and more personal data transferred through the BLE protocol. However, there are various attack techniques for Bluetooth technologies. How to test the security of BLE devices has become an urgent challenge to overcome. In this paper, we utilized the black box test method, Fuzz Testing, which is common in software testing. This paper presents a Security Fuzz Testing Framework for BLE Protocols and uses open source hardware/software resources to implement the testing platform. We also analyze the difficulties and solutions encountered in the testing of BLE protocols.