生平

孙峻的曾祖父孙静是孙坚之弟，孙静长子孙暠的第三子孙恭，为孙峻之父。

早年

孙峻年少时弓马娴熟，精明果敢，胆大有决断。孙权晚年时，孙峻升任武卫都尉，并任侍中。曾向孙权推荐诸葛恪。孙权临死前孙峻受遗诏与诸葛恪、滕胤共同辅政，领武卫将军，封都乡侯。

诛杀诸葛恪

孙权死后，诸葛恪专权。建兴二年春（253年），诸葛恪不听劝谏，劳师动众徵调大军二十万出兵攻打曹魏，逐渐失去民心。诸葛恪围攻合肥新城，但久攻不下，军中爆发疾病，很多将士病倒，将领报告，但诸葛恪认为是谎报，不予理会。曹魏趁势进兵，诸葛恪才撤军，但吴军已伤亡惨重，上下怨声载道。诸葛恪出征归来后，将先前选曹奏准任命的各衙署长官全部罢免，重新挑选。又更换宫廷守卫，任用自己的亲信，并整理军备，准备进攻青、徐二州。孙峻见诸葛恪民心渐失，与吴主孙亮密谋后发动政变，于酒宴中设伏兵杀死诸葛恪，灭其三族。

赐死孙和

建兴二年冬（253年），孙峻诛杀诸葛恪后，升为丞相大将军，都督国内外军事，授予符节，封富春侯。同年，孙峻为巴结全公主孙鲁班，将废太子孙和迁移到新都居住，后派使者赐死孙和，孙和正妃张氏也随之自杀。

图谋伐魏及身亡

五凤元年（254年），吴侯孙英密谋诛杀孙峻，因事情败露而自杀（一说孙英不知情被卷入而只得自杀）。次年，魏将毌丘俭、文钦起事反叛，与魏军交战于乐嘉，孙峻率领骠骑将军吕据、左将军留赞偷袭寿春，正好遇到文钦兵败来投，吴军就此撤回，回师途中在高亭打败魏将曹珍，但吴军也被诸葛诞部下蒋班追上，留赞战死。同年，将军孙仪、张怡、林恂等想趁孙峻会见蜀汉使者时密谋诛杀孙峻，因事情败露，孙仪等自杀，受牵连被杀者数十人，其中包括朱公主孙鲁育。

太平元年（256年），孙峻受文钦怂恿伐魏，派文钦和吕据、车骑将军刘纂、镇南将军朱异、前将军唐咨率军从江都进入淮、泗一带，以便占领青州和徐州。孙峻和滕胤来到石头城为军队践行，孙峻看到吕据率领的军队部伍整齐，心生厌恶，藉口心口疼痛离去。当夜做梦被诸葛恪的冤魂用剑击中，惊惧发病而死，后事托付给堂弟孙綝。

死后

吴景帝孙休诛杀孙綝后，又以孙峻杀孙鲁育等人之故，将孙峻的坟墓刨开，殉葬的印章绶带没收，棺椁削薄后重新安葬。孙休又耻于与孙峻、孙綝同族，将二人族籍从族谱中削除，称之为「故峻、故綝」。

演义形象

《三国演义》中，太傅诸葛恪在东兴之战大败归来后，唯恐百官议论，轻则流放，重则斩杀，又任用心腹张约、朱恩掌管御林军。太常卿滕胤与诸葛恪有隙，见诸葛恪大失民心，与吴主孙亮、孙峻设宴诛杀诸葛恪并族灭其三族，朝政大权落入孙峻手中。孙綝被吴景帝孙休诛杀后，孙峻遭开棺戮尸。

家庭

曾祖：

• 孙静，孙坚之弟。

祖父：

• 孙暠，孙静长子。

父亲：

• 孙恭，孙暠三子。

姐妹：

• 孙氏，孙峻姐，嫁全尚

• 孙氏，孙峻妹，嫁朱据子朱损

堂弟：

• 孙綝，字子通，孙绰之子。

• 孙恩、孙据、孙干、孙闓，孙綝弟。

• 孙虑，一作孙宪，孙超之子。

评价

陈寿：「峻素无重名，骄矜险害，多所刑杀，百姓嚣然。又奸乱宫人，与公主鲁班私通。」「峻、綝凶竖盈溢，固无足论者。」（《三国志·吴书十九·诸葛滕二孙濮阳传》）

Life

Sun Jun was a great-grandson of Sun Jing, an uncle of Wu's founding emperor Sun Quan; his father was Sun Gong (孙恭) and his grandfather was Sun Gao (孙暠). Late in Sun Quan's reign, he became a trusted personal assistant of Sun Quan's, and he was said to have been, in conjunction with Sun Quan's daughter Sun Luban, involved in falsely accusing the crown prince Sun He, leading to Sun He's deposal in 250. At his and Sun Luban's recommendation, Sun Quan created his youngest son Sun Liang as his successor. Again at Sun Jun's recommendation, Sun Quan named Zhuge Ke regent for Sun Liang in 251, and after his death in 252, Sun Jun became a key assistant to Zhuge.

In 253, after Zhuge Ke had suffered a major military defeat to Wu's rival state, Cao Wei, and subsequently refused to admit fault but instead tried to wipe out all dissent, Sun Jun assassinated him and took over as regent. There was initial anticipation that he might be willing to share power with other key officials, but he instead consolidated power into his own hands. He was not known for his accomplishments during his regency, and he was severe in his punishments. As a result, there were several conspiracies against his life during his regency, including one in 254 led by Sun Ying (孙英), the Marquis of Wu, the son of Sun Quan's eldest son Sun Deng, and one in 255, which Sun Luban (with whom Sun Jun might have had an affair) falsely accused her sister Sun Luyu of being the leader of, and Sun Jun had Sun Luyu executed.

In 256, at the urging of Wen Qin, a Wei general who had surrendered to Wu after a rebellion of his and Guanqiu Jian's failed, Sun Jun considered launching a major attack against Wei, but as he was about to do so, he grew ill. He transferred his powers to his cousin Sun Chen and then died. Sun Chen succeeded him.

In 258, after Sun Chen had deposed Sun Liang and had in turn been executed by the succeeding emperor Sun Xiu, Sun Jun's casket was disinterred and reduced in size, as a sign of imperial disapproval; both Sun Jun and Sun Chen were posthumously banished from the royal family and renamed Gu Jun (故峻) and Gu Chen (故綝) respectively.