Provided are an organic light emitting device and a display apparatus. An organic light emitting device, including an anode, a cathode, and an emitting layer disposed between the anode and the cathode; wherein a hole transport layer and an electron blocking layer are disposed between the anode and the emitting layer; the hole transport layer and the electron blocking layer satisfy: |HOMOHTL−HOMOEBL|≤0.2 eV wherein HOMOHTL is a highest occupied molecular orbital, HOMO energy level of the hole transport layer and HOMOEBL is a HOMO energy level of the electron blocking layer.