The invention relates to a device for producing ozone. An integrated modular ozone generator is commonly formed by matching chip type discharging electrode plate boxes with chip type ground electrodeplate boxes and repeatedly stacking the chip type discharging electrode plate boxes and the chip type ground electrode plate boxes; then the integrated modular ozone generator can be used as an evaporator of a refrigerator for connection, ultralow-temperature heat dissipation and cooling can be directly carried out on discharging electrodes and ground electrodes by using the refrigerator, and notonly the power consumption of generated ozone can be reduced to a large extent, but also the ozone concentration can be increased to the large extent.