The hosts thumped Eric Hely's relegation strugglers to move back to within touching distance of leaders Montpellier at the top of the table
Javier Pastore put the hosts ahead after six minutes with his first goal in six games, before Modibo Maiga capitalised on a goalkeeper error to equalise after 12 minutes.
PSG were far better after that setback, and scored four times without reply. Thiago Motta put the hosts back in front with his first goal since joining in January, before Jeremy Menez, a double from Nene and a stoppage time goal from Sylvain Armand in the second half sealed the hosts' biggest win of the season.
Carlo Ancelotti again opted to drop club captain Mamadou Sakho in favour of Milan Bisevac, with the attacking duo of Kevin Gameiro and Guillaume Hoarau named on the bench, as Jeremy Menez reprised his role in attack.
And it wasn't long before les Parisiens warmed to yet another line-up change by the Italian as they broke the deadlock after just six minutes of play. Nene combined well with Javier Pastore who elicited a touch of class to drill a shot with his right foot, past Teddy Richert and into the net.
Sochaux, who have been improving of late under Eric Hely, immediately hit back and were rewarded with an equaliser soon after. Marvin Martin, who ironically revealed this weekend that he would like a move to the capital club, delivered in a speculative cross which caught Alex out and left Maiga to head past the on-rushing Salvatore Sirigu to make it 1-1.
Whilst PSG's lead had only lasted all of six minutes, they were lucky not to have fallen behind. Les Lionceaux's efficient counter-attacking moves had bamboozled the hosts, with Maiga again picked out unmarked, only this time, the Malian had seen his effort came back off the post.
The hosts were rather more prudent in their attacking forays from there-in, and ultimately were gifted as they re-took the lead after 25 minutes. Nene located Thiago Motta from a a free-kick on the left, and the naturalised Italian was left totally unmarked to send in a fantastic diving header past the reaches of Richert.
The visitors threatened through Martin and Boudebouz, with the latter forcing Sirigu into a fine save after a powerful 20 yard effort - and yet, Sochaux were punished once more. A frantic high-pressured counter-attack left Hely's men reeling, and allowed Menez to head his sixth league goal of the season from Siaka Tiene's cross just before half-time.
Whilst PSG were touted as expensive failures after last week's frustrating 1-1 draw with Auxerre, there would be no such repeat of such lethargic finishing as the match moved into a rout.
Ten minutes after the restart, Christophe Jallet whipped in a threatening cross which evaded Richert, and left Nene to divert the ball into an empty net for a 4-1 lead. Five minutes later, the Brazilian doubled his tally in some style.
In a move akin to the hosts' fourth, Jallet was on hand to thread a delightful ball in towards Nene, who dribbled past the goalkeeper with consummate ease to tap into the net for his 16th league goal of the season.
The shell-shocked visitors were unable to add any other input at the other end, and were lucky not to have been punished further as Menez and Nene spurned decent opportunities before Armand made it 6-1 in stoppage time with a fine finish as Anceotti's men wrapped up a big win.
Following on from the win, PSG move back to within two points of Montpellier at the top of the table, and next face incumbent champions Lille at Stadium Lille Metropole. Sochaux remain in the bottom three, and next entertain Bordeaux at home.