EXCLUSIVE

Pam Anderson REALLY should have tried harder to win "Dancing with the Stars" (and its cash prize) ... 'cause girl was just slapped with TWO tax liens totaling over $370k -- and could probably use the money.

Tax Lien #1: Filed by the IRS, says Pam owes $259,395.75 for unpaid taxes in 2011.

Tax Lien #2: Filed by the State of CA, says Pam owes $112,118.90 -- also for 2011.

All totaled, the "DWTS: All Stars" star -- who got axed in round one this time -- needs to cough up $371,514.65.

But this isn't Pam's first run-in with tax problems. The actress had another lien filed against her back in 2009 for $1.7 MILLION. And at one point, her name even appeared on the Golden State's list of "Top 500 Delinquent Tax Payers."