The invention provides a telescopic contact assembly for a thyristor on-load tap switch. The telescopic contact assembly for the thyristor on-load tap switch comprises insulation supports symmetrically fixed to the two ends of a touch rod through locating pins. The insulation supports are connected through a connecting piece. Each installation support is provided with a telescopic contact perpendicular to the connecting piece. Static contacts are symmetrically arranged at the two ends of an orientating guide board. The telescopic contact at one end of the connecting piece is provided with a lead connecting piece connected with a thyristor circuit and used for enabling the telescopic contact and one static contact to be connected or disconnected with the thyristor circuit and the other end of the connecting piece is provided with a lead connecting piece used for enabling the touch rod and the other static contact to be connected or disconnected with the thyristor circuit. Compared with the prior art, the telescopic contact assembly for the thyristor on-load tap switch has the advantages that the requirement for timing sequence control of the thyristor circuit is satisfied, the number of moving contacts and the number of the static contacts can be increased, recovery voltage between fractures is effectively reduced, and therefore the different requirements for voltage adjustment or capacitance adjustment of a transformer are satisfied.