The invention relates to a digital-signal-processor-oriented multi-predicate controlling and compiling optimizing method. The formula of a multi-predicate control instruction is (p(1), p(2), ..., p(n))Rs=Rm oP Rn, the meaning is (p(1), p(2), ...,p(n), n>=1, when n control predicates are all true, the instruction Rs=Rm oP Rn is normally executed, and if the n control predicates are not true, the instruction Rs=Rm oP Rn is abandoned, wherein Rs=Rm oP Rn represents a computing instruction or a memory access and storage instruction, p(1), p(2), ...,p(n) are virtual predicate register, and Rm, Rn and Rs are general registers. According to the digital-signal-processor-orient multi-predicate controlling and compiling optimizing method, a multi-predicate controlling mode is adopted, multiple conditions can be more flexibly and efficiently supported to be converted into predicates, and the efficiency of generated codes is higher; through the multi-predicate controlling mode, the phenomenon of predicate definition nesting is eradicated, and through multi-predicate controlling, predicate computing is globalized and flattened.