A solid state cathodoluminescence (SSCL) device in which ZnO nanorods act as the field emission electrode and SiO2 as the electronic accelerating layer and poly ［2-methoxy-5-(2-ethyl-hexyloxy)-1, 4-phenylene vinylene］ (MEH-PPV) polymer as the luminescent layer is first designed. Under AC bias, SSCL of MEH-PPV is realized. The luminescence peaks are located at 580 nm and 450 nm, respectively. Compared with the device without the accelerating layer, we find that mixed-excited mode device can achieve greater brightness at long wavelength.