The invention discloses a solar insulating glass block which comprises two oppositely arranged main glass plates, and side glass plates, wherein the main glass plates and the side glass plates form a glass block inner cavity through encompassment; a plurality of lighttight supporting layers are obliquely arranged in the glass block inner cavity at intervals; a plurality of solar vacuum heat collection pipes are fixedly arranged on each lighttight supporting layer side by side; a light permeable supporting layer is arranged above each layer of the solar vacuum heat collection pipes; each solar vacuum heat collection pipe comprises a light permeable glass pipe casing and a lighttight inner glass pipe; a solar vacuum heat collection pipe light permeable section is formedabove the common tangent of the upper side of the inner glass pipe of each solar vacuum heat collection pipe; a solar vacuum heat collection pipe lighttight section is formed below the common tangent of the upper side of the inner glass pipe of each solar vacuum heat collection pipe; a light permeable insulating zone layer is arranged between each upper lighttight supporting layer and the corresponding lower solar vacuum heat collection pipe lighttight section; and the lowest point of the upper surface of each light permeable insulating zone layer is not higher than the highest point of the lower surface of the light permeable insulating zone layer. According to the solar insulating glass block, the heat insulation effect is good, and the solar energy can be efficiently utilized.