The invention discloses a liquid crystal display panel and a spacer assembly thereof. The spacer assembly comprises an upper spacer and a lower spacer which are used for being fixed to an upper substrate and a lower substrate, the upper substrate and the lower substrate are oppositely arranged, the upper space comprises at least one first spacer part and at least one second spacer part, and the distance between the end face of the first spacer part and a pressing face is smaller than that between the end face of the second spacer part and the pressing face. Due to the fact that the segment difference is formed in the upper spacer, when the liquid crystal display panel is located under the low-temperature condition or bears dynamic pressure, the portion, with the minimum contact density or distribution density, of the upper spacer is firstly used for supporting, when the portion, closest to the pressing face, of the upper space bears pressure and certain deformation is generated, the portion, slightly farther away from the pressing face, of the upper spacer is used for supporting and bears part of pressure, the anti-pressure capacity of the liquid crystal display panel is improved, and high and low temperature LC margin ranges of the liquid crystal display panel can be both taken into consideration.