This paper studied the feasibility of applying the high density resistivity method to monitoring the temperature field of freezing wall. The electrical conducting characteristics of silty soil in No.4 Line of Shanghai metro system were studied with three resistivity methods. The results show: 1) when temperature falls, and electrical conducting characteristics are close to temperature; 2) when temperature overtops -4 ℃, the range of resistivity diversification of silty soil is relatively narrow when temperature changes; 3) when temperature is below -4 ℃, the resistivity of silty soil will change obviously when temperature changes; and 4) three high fitting degree regression equations of temperature-resistivity were fitted, they were applicable to 30 ℃≥t＞-4 ℃, -4 ℃≥t＞-10 ℃, -10 ℃≥t≥-30 ℃, respectively by each high density resistivity method. All the above results show that the high density resistivity method is suitable for monitoring the temperature field of freezing wall.