By connive,divide the work, joint crime make crime easy to practise and countermine spy and escape shock.That why they must be single prescripted in criminal law.

• 在刑事立法上单独规定共同犯罪最本质的原因，是共同犯罪通过密谋策划、互相分工，使犯罪易于实行，并便于对抗侦查、逃避打击，在客观上比单独犯罪造成的社会危害性更大，破坏性更强。