This study aimed to determine preservice science teachers' (PST) attitudes towards the Reconceptualized Family Resemblance Approach to the Nature of Science and to examine PST attitudes towards this approach according to grade levels. The study group consists of 75 people studying in the 3rd and 4th year of undergraduate education. The sample of the study was determined through 'purposive sampling'. The screening model, one of the quantitative research methods, was used in the research. The questionnaire consists of 70 items and 6 categories. The Cronbach's Alpha value of the scale, for which the reliability study was conducted, was determined as 0.73. To examine the distribution of the data, the Shapiro-Wilk test was performed as a normality test and the kurtosis and skewness values of the data were read. Independent sample t-test was applied on normally distributed 3rd and 4th grade PST data. According to the findings, it was determined that the PST was above the average and had a positive attitude. Although there is a difference between PST perspectives at two different grade levels for two questions of the scale, there is no significant change among PST for the entire performance.