The invention discloses a time-delay double-door opening method, and aims to an ATO train running under an automatic door mode; the time-delay double-door opening method comprises the following steps: setting an opening order and delayed time of a double-door station on an ATS software interface; allowing the ATS to send the opening order and delayed time information to a VOBC before the train arrives; allowing the VOBC to execute the opening/closing order according to instructions, and simultaneously sending the opening/closing door information to a TCMS for broadcasting.