The invention relates to a spherical standard lamp for detection. The spherical standard lamp for detection comprises a lamp holder and a glass shell. A core column and a filament are arranged in the glass shell. The glass shell is spherical. A square fixing frame is further arranged in the glass shell, the center of the bottom of the fixing frame is connected to the inner portion of the core column through a supporting rod, the lower end of the fixing frame is further fixedly provided with a fixing base which is horizontally arranged, a plurality of molybdenum wire hooks are arranged on the fixing base, the inner side of the top of the fixing frame is further provided with a plurality of molybdenum wire hooks in a reversed-hanging mode, the molybdenum wire hooks at the upper row and the molybdenum wire hooks at the lower row are arranged in a staggered mode, the distance between every two adjacent molybdenum wire hooks at the upper row or at the lower row ranges from 1.5mm to 2mm, the filament penetrates through the hook portions of the tops of the molybdenum wire hooks in sequence from left to right, and the whole filament is located on the same plane. The distance between the plane and the front side of the glass shell is equal to the distance between the plane and the rear side of the glass shell and the distance between the left end of the filament and the left side of the glass shell is equal to the distance between the right end of the filament and the right side of the glass shell. The spherical standard lamp for detection has the advantages of being simple in structure, firm in filament fixation and capable of effectively reducing influence by stray light.