The experimental system of heat loss of all-glass evacuated solar collector tubes(evacuated tube) is firstly designed and constructed,which uses electric heater as thermal resource.The equilibrium temperatures are less than±1℃during the test.and the temperature differences of up/middle/low node in the tube are less than 1℃,3℃,and 7℃respectively.The heat loss of evacuated tube increases about 2.7%with vacuum state of 0.01--1 mPa,and it has the best performance at tube temperature of 20--280℃.The invalidation tube(>200 mPa) has the biggest heat loss that increases linearly with the tube temperature.The evacuated tubes with the vacuum of 0.01-1 mPa are suitable for most solar adsorption refrigeration. The experimental system of heat loss of all-glass evacuated solar collector tubes (evacuated tube) is referred to designed and constructed, which uses electric heaters as thermal resource. The anations are less than ± 1 ° C during the test. And the temperature differences of up / middle / low node in the tube are less than 1 ° C, 3 ° C, and 7 ° C. The heat loss of evacuated tube increases about 2.7% with vacuum state of 0.01-1 mPa, and it has the best performance at The invalidation tube (> 200 mPa) has the biggest heat loss that increases linearly with the tube temperature. Evacuated tubes with the vacuum of 0.01-1 mPa are suitable for most solar adsorption refrigeration.