Lignite could be converted to high value-added char and tar through a pyrolysis process. To improve the tar yield as well as the quality of tar/char during a low temperature (550 degrees C) lignite pyrolysis (LT-LP) process, the influence of mixing inexpensive and accessible recycled carbocoal with three kinds of lignite was investigated in a fixed-bed reactor. The LT-LP processes with and without recycled carbocoal were investigated using a TGA and were compared in detail. The results indicated that the addition of the recycled carbocoal into the three lignite optimized the light tar yield from 4.63, 3.33, and 2.09 g/g to 10.50, 6.10, and 5.01 g/g, and improved the gasification reactivity of the chars up to 2.88, 2.58, and 2.88 h(-1), respectively. To identify the role of recycled carbocoal during the LT-LP process, the obtained products, such as tar and char, were characterized by chromatography, thermal gravimetric analyzer, chromatograph-mass spectrometer, elemental analyzer, Fourier transform infrared spectroscopy, and scanning electron microscope. It was demonstrated that the existence of the recycled carbocoal could impede the self-polymerization of small molecule hydrogen-containing (SM-HC) free radicals and cut down the reactions between SM-HC and hydroxyl radicals at the weak-bonds breaking zone (300-450 degrees C), thereby supplying sufficient free radical stabilizers for the tar intermediates at the molecular skeleton region (450-550 degrees C). The high-valued tar and char were obtained. In summary, the employment of recycled carbocoal during the LT-LP process could not only promote the economic benefit of LT-LP products but also reduce the cost of lignite value-added utilization.