The single tube receiver consisting of a vacuum tube and a Compound Parabolic Concentrator(CPC)has special requirements for the mirror field arrangement of a linear Fresnel reflector system. According to the characteristics of the single tube receiver, a method of mirror field arrangement without shading was successfully presented by using CPC maximum acceptance angle to control the aspect ratio of mirror field. Practical mathematical expressions of the mirror field arrangement without shading were derived by geometric method, and concrete numerical method was given. The mirror field arrangement was optimized through combining the distance between the reflector and the center of mirror field with the ratio of ground coverage. The experiment results for the CPC with 45° maximum acceptance angle and a mirror field with 21-mirrors and 380 mm width show that when the working time of the system without shading is set to 6 hours, the relative reasonable maximum spacing between two mirrors will be 537 nm and the corresponding ground coverage is 73.28%. For the linear Fresnel reflector system with a single tube receiver, the method of mirror field arrangement has universality and guiding significances.