The non-isothermal crystallization kinetics of Fe41Co7Cr15Mo14Y2C15B6 bulk amorphous alloy with high glass-forming ability was studied by differential thermal analysis (DTA). Glass transition temperature Tg, onset crystallization temperature Tx, and peak crystallization temperatures Tp1 and Tp2 were obtained from the DTA curves, which showed significant dynamic effects. The glass transition activation energy Eg, crystallization activation energy Ex, and activation energies Ep1 and Ep2 at different heating rates were calculated using the Kissinger and Ozawa methods. The thermodynamic mechanism of this bulk amorphous alloy with high thermal stability was explained by these methods.