The invention provides a pixel unit circuit, a pixel circuit, a driving method and a display device. The pixel unit circuit includes a light emitting element, a storage capacitor module, a driving transistor, a light emitting control module, a charging compensation control module, and a voltage control module. A first end of the light emitting element is connected with a first voltage input end. The control end of the light emitting control module is connected with a light emitting control line, a first end is connected with a second voltage input end, and a second end is connected with a second pole of the driving transistor. The light emitting control module controls whether the second pole of the driving transistor is connected with the second voltage input end under the control of the light emitting control line. The charging compensation control module controls whether the gate of the driving transistor is connected with a data line under the control of a gate line. The voltage control module is connected with the first voltage input end, and is used for controlling the voltage value of a first voltage input to the first voltage input end. The brightness of the light emitting element can be adjusted, and switching between a high-brightness mode and a high-contrast mode can be realized.