Mayor de Blasio came under attack in the City Council Thursday for spending too much and saving too little.

Council Speaker Melissa Mark-Viverito and two other legislators criticized the administration for not maintaining enough cash reserves in the new $85 billion city budget to weather an economic downturn or absorb potential cuts from the Trump administration.

“I continue to urge the administration to further strengthen the city’s reserves,” Mark-Viverito said at a Council budget hearing. “They are still not at the level advocated for by the Council to ensure stability in a time of financial difficulty.”

The Council is wants the administration to add an additional $317 million to the city’s capital stabilization reserve. De Blasio plans to add $250 million, plus another $1 billion to the general reserve.

Council members Julissa Ferreras-Copeland (D-Queens) and Steven Matteo (R-Staten Island) also criticized Hizzoner for not socking away enough for a rainy day.

“I don’t think we’re saving enough,” Matteo said. “We’re not putting enough reserves in.”

Dean Fuleihan, the mayor’s budget director, insisted the administration is being conservative in its spending.

“We take a careful approach to the executive budget by maintaining historic reserves, cautiously estimating both revenue and debt service,” he testified.