A pixel unit circuit includes a light emitting element, a first end thereof being coupled to a low level input end; a storage capacitor module, a first end thereof being coupled to a direct current voltage input end; a driving transistor, a gate electrode thereof being coupled to a second end of the storage capacitor module, and a first electrode thereof being coupled to a second end of the light emitting element; a first control module, coupled to a gate line, a data line and the gate electrode of the driving transistor, configured to control whether the gate electrode of the driving transistor is connected to the data line under the control of the gate line; and a potential control transistor, a gate electrode and a first electrode thereof being coupled to the first electrode of the driving transistor, the second electrode thereof being grounded.