Аннотация:An increase in flux and dose rate on the MIR space station caused by solar cosmic rays (SCR) was registered in September-October 1989. This article contains the measurement results, carried out by the "Lyulin" dosimeter and the "Ryabina" radiometer. It is shown that on 29 September 1989 the event per day averaged dose exceeded the background level ten times, while on a number of orbits the dose rate increased more than 50 times. Time behavior of the integral dose agrees well with the dynamics of SCR fluxes measured on the "GOES-7" satellite. On the basis of the proton flux distribution along the space station trajectory, the proton spectrum shape in the range above 1 GV was estimated. It turned out that exponential law is a good approximation of this spectrum. The characteristic rigidity in this law varies from 0.65 GV in an initial moment to 0.35 GV in an isotropic period of an SCR flux.