A data driving system and a data driving chip for a liquid crystal panel as well as a liquid crystal display (LCD) device comprising the same are disclosed. The data driving system comprises a data driving chip, a timing controller and a first interface connected to the data driving chip and the timing controller. The first interface comprises a terminating resistor for converting a current signal transmitted through the first interface into a voltage signal, and the terminating resistor is disposed inside the data driving chip. By having the terminating resistor disposed inside the chip, the present disclosure can eliminate the need of additional electric tests, thus saving the cost of the additional electric tests.