The invention discloses an RT-LAMP (reverse transcription and loop-mediated isothermal amplification) detection primer group, an RT-LAMP detection kit and an RT-LAMP detection method for a simian immunodeficiency virus. The detection primer group comprises a pair of outer primers, a pair of loop primers and a pair of inner primers. The detection kit comprises the primer group, RT-LAMP reaction liquid, Bst DNA polymerase, reverse transcriptase as well as negative control and positive control. The detection method comprises the following steps: extracting to-be-detected virus RNA; conducting reverse transcription on the RNA under the action of revertase; then, amplifying a sample template by virtue of six specific primers and one Bst DNA polymerase having strand displacement activity at 63-65 DEG C; and judging whether a to-be-detected sample contains the simian immunodeficiency virus (SIV) RNA by observing whether a reaction tube solution becomes muddy or not with naked eyes or performing electrophoresis to analyze whether a ladder exists or not. The detection primer group, the detection kit and the detection method provided by the invention have the advantages of being highly specific, high in sensitivity, rapid and efficient, simple and convenient to operate, easy in result reading and the like, and are suitable for popularization and application in grassroots animal epidemic disease monitoring units and experimental monkey breeding enterprises in remote areas.