研究中立型时滞差分方程Δ(xn -pnxn-k) +qnxn-l =0在允许pn- 1振动的条件下 ,给出方程存在正解的两个充分条件“,”In this paper, the neutral delay difference equations ? Δ (x n-p nx n-k )+q nx n-l =0? with oscillating coefficients is studied, two sufficient conditions for the existence of positive solutions of the equation are obtained when p n-1 is oscillatory.