Recently,　a　measurement-device-independent　protocol　for　deterministic　quantum　secret　sharing　was　proposed　(Gao　et　al.　in　Sci　Chin　Phys　Mech　Astron　63(12):120311,　2020).　Unfortunately,　it　was　pointed　out　to　be　insecure　against　the　participant　attack　(Yang　et　al.　in　Sci　Chin　Phys　Mech　Astron　64(6):260321,　2021).　However,　this　participant　attack　strategy　has　an　assumption　that　a　dishonest　agent　has　to　reveal　his　single-photon　state　after　other　agents.　Here,　we　give　a　more　powerful　participant　attack　strategy　regardless　of　the　announcement　order.