A liquid crystal composition, by the total weight of the liquid crystal composition, comprising: 8%-50% of compound expressed by general formula 10%-70% (by weight) of compound expressed by general formula 5%-50% (by weight) of compound expressed by general formula 0-20% (by weight) of compound expressed by general formula and 0-15% (by weight) of compound expressed by general formula wherein, R 1 is a C 1-10 alkyl; R 2, R 3 and R 4 are independently C 1-10 alkyl or alkoxy, C 2-10 alkenyl or C 2-10 alkenyl of which arbitrary hydrogen atom is substituted by fluorine atom; X 1, X 2, X 3 and X 4 are independently hydrogen or fluorine, wherein X 1 and X 2 are not simultaneously hydrogen or fluorine; Z is -CO-O-, -O-CO-, -CF 2 O-, -OCF 2 -, -CH 2 O-, -OCH 2 -, -CH 2 CH 2 -, -(CH 2) 4 -, -C 2 F 4 -, -CH 2 CF 2 -, -CF=CF-, -CH=CH- or a single bond; and m, n are 0 or 1; A 1, A 2, A 3 are trans-1,4-cyclohexylidene or 1,4-phenylene; A 4, A 5 and A 6 independently represent one of the following groups: R 5, R 6 are independently C 1-10 alkyl or C 2-10 alkenyl; R 7, R 8 are independently C 1-10 alkyl; X 5, X 6, X 7 and X 8 are independently hydrogen or fluorine, and for each case, only one of X 5, X 6, X 7 and X 8 can be fluorine and the others are all hydrogen. 8%-50% of compound expressed by general formula 10%-70% (by weight) of compound expressed by general formula 5%-50% (by weight) of compound expressed by general formula 0-20% (by weight) of compound expressed by general formula and 0-15% (by weight) of compound expressed by general formula wherein, R 1 is a C 1-10 alkyl; R 2, R 3 and R 4 are independently C 1-10 alkyl or alkoxy, C 2-10 alkenyl or C 2-10 alkenyl of which arbitrary hydrogen atom is substituted by fluorine atom; X 1, X 2, X 3 and X 4 are independently hydrogen or fluorine, wherein X 1 and X 2 are not simultaneously hydrogen or fluorine; Z is -CO-O-, -O-CO-, -CF 2 O-, -OCF 2 -, -CH 2 O-, -OCH 2 -, -CH 2 CH 2 -, -(CH 2) 4 -, -C 2 F 4 -, -CH 2 CF 2 -, -CF=CF-, -CH=CH- or a single bond; and m, n are 0 or 1; A 1, A 2, A 3 are trans-1,4-cyclohexylidene or 1,4-phenylene; A 4, A 5 and A 6 independently represent one of the following groups: R 5, R 6 are independently C 1-10 alkyl or C 2-10 alkenyl; R 7, R 8 are independently C 1-10 alkyl; X 5, X 6, X 7 and X 8 are independently hydrogen or fluorine, and for each case, only one of X 5, X 6, X 7 and X 8 can be fluorine and the others are all hydrogen. R 1 is a C 1-10 alkyl; R 2, R 3 and R 4 are independently C 1-10 alkyl or alkoxy, C 2-10 alkenyl or C 2-10 alkenyl of which arbitrary hydrogen atom is substituted by fluorine atom; X 1, X 2, X 3 and X 4 are independently hydrogen or fluorine, wherein X 1 and X 2 are not simultaneously hydrogen or fluorine; Z is -CO-O-, -O-CO-, -CF 2 O-, -OCF 2 -, -CH 2 O-, -OCH 2 -, -CH 2 CH 2 -, -(CH 2) 4 -, -C 2 F 4 -, -CH 2 CF 2 -, -CF=CF-, -CH=CH- or a single bond; and m, n are 0 or 1; A 1, A 2, A 3 are trans-1,4-cyclohexylidene or 1,4-phenylene; A 4, A 5 and A 6 independently represent one of the following groups: R 5, R 6 are independently C 1-10 alkyl or C 2-10 alkenyl; R 7, R 8 are independently C 1-10 alkyl; X 5, X 6, X 7 and X 8 are independently hydrogen or fluorine, and for each case, only one of X 5, X 6, X 7 and X 8 can be fluorine and the others are all hydrogen.