The small brown plant hopper (SBPH), Laodelphax striatellus Fallén becomes an important pest of rice plant since it causes server damage by direct feeding and transmits virus disease recent years. Results from field surveys show that winter wheat field is an important place for overwintering, and multiplication of spring population of SBPH. The more important is the population of SBPH in winter wheat field supplied the SBPH source to disperse to rice fields. To better understand the population development and to improve the field sampling and chemical spraying strategy, we investigated the spatio-temporal dynamics of the first generation larvae of SBPH in winter wheat field. We analyzed the spatial structures of the first generation larvae of SBPH in the time series by using the geostatistical methods. To fit the semivariogram models for the every instars of the larvae in the wheat field, the spherical model and the Gaussian model were best for the most situations while only a few datasets best fitted the hole effect and the exponential model. We analyzed the relations between the characteristics indices of the semivariograms and ecological meaning of the larval density or environment factors. There were no significant correlation between one of the indices, “the major/minor range” and the density of SBPH. Both ranges kept relatively constant; The “nugget” was positively correlated with the density because a proportional effect existed between them. Furthermore, we calculated an indices “random strength” from the nugget to sill ratio for the semivariograms to correct the proportional effect and to provide a more accurate view of the spatial variability structure. We found the correlation between the random strength and the density fitted a cubic polynominal curve. Obvious anisotropy appeared in most datasets, and it likely due to the difference of plant spacing and row spacing. We drawn the predicted surface maps with the Ordinary Kriging method and illustrated in the time order to provide a visible presentation of the spatio-temporal distribution of the larval SBPH population. By analyzing those maps, we found that the spatial distribution of larval SBPH was very stable over time, most probably, due to the sufficient food、the insular habitation and the weak movement ability. In addition , factors such as predators in the field also affected the distribution of the larval SBPH population.